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CVE-2026-22925 (GCVE-0-2026-22925)

Vulnerability from nvd – Published: 2026-05-12 08:20 – Updated: 2026-05-12 13:27

Summary

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V5.0). The affected application is susceptible to resource exhaustion when subjected to high volume of TCP SYN packets This could allow an attacker to render the service unavailable and cause denial-of-service conditions by overwhelming system resources.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-770 - Allocation of Resources Without Limits or Throttling

Assigner

siemens

References

1 reference

URL	Tags
https://cert-portal.siemens.com/productcert/html/…

Impacted products

1 product

Vendor	Product	Version
Siemens	SIMATIC CN 4100	Affected: 0 , < V5.0 (custom)

Show details on NVD website

JSON

To clipboard

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CVE-2026-22924 (GCVE-0-2026-22924)

Vulnerability from nvd – Published: 2026-05-12 08:20 – Updated: 2026-05-13 09:51

Summary

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V5.0). The affected application does not properly restrict unauthenticated connections and is susceptible to resource exhaustion conditions. This could allow an attacker to disrupt normal operations or perform unauthorized actions, potentially impacting system availability and integrity.

Severity

9.1 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

8.8 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-306 - Missing Authentication for Critical Function

Assigner

siemens

References

1 reference

URL	Tags
https://cert-portal.siemens.com/productcert/html/…

Impacted products

1 product

Vendor	Product	Version
Siemens	SIMATIC CN 4100	Affected: 0 , < V5.0 (custom)

Show details on NVD website

JSON

To clipboard

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CVE-2026-2673 (GCVE-0-2026-2673)

Vulnerability from nvd – Published: 2026-03-13 13:23 – Updated: 2026-05-18 19:23

Title

OpenSSL TLS 1.3 server may choose unexpected key agreement group

Summary

Issue summary: An OpenSSL TLS 1.3 server may fail to negotiate the expected preferred key exchange group when its key exchange group configuration includes the default by using the 'DEFAULT' keyword. Impact summary: A less preferred key exchange may be used even when a more preferred group is supported by both client and server, if the group was not included among the client's initial predicated keyshares. This will sometimes be the case with the new hybrid post-quantum groups, if the client chooses to defer their use until specifically requested by the server. If an OpenSSL TLS 1.3 server's configuration uses the 'DEFAULT' keyword to interpolate the built-in default group list into its own configuration, perhaps adding or removing specific elements, then an implementation defect causes the 'DEFAULT' list to lose its 'tuple' structure, and all server-supported groups were treated as a single sufficiently secure 'tuple', with the server not sending a Hello Retry Request (HRR) even when a group in a more preferred tuple was mutually supported. As a result, the client and server might fail to negotiate a mutually supported post-quantum key agreement group, such as 'X25519MLKEM768', if the client's configuration results in only 'classical' groups (such as 'X25519' being the only ones in the client's initial keyshare prediction). OpenSSL 3.5 and later support a new syntax for selecting the most preferred TLS 1.3 key agreement group on TLS servers. The old syntax had a single 'flat' list of groups, and treated all the supported groups as sufficiently secure. If any of the keyshares predicted by the client were supported by the server the most preferred among these was selected, even if other groups supported by the client, but not included in the list of predicted keyshares would have been more preferred, if included. The new syntax partitions the groups into distinct 'tuples' of roughly equivalent security. Within each tuple the most preferred group included among the client's predicted keyshares is chosen, but if the client supports a group from a more preferred tuple, but did not predict any corresponding keyshares, the server will ask the client to retry the ClientHello (by issuing a Hello Retry Request or HRR) with the most preferred mutually supported group. The above works as expected when the server's configuration uses the built-in default group list, or explicitly defines its own list by directly defining the various desired groups and group 'tuples'. No OpenSSL FIPS modules are affected by this issue, the code in question lies outside the FIPS boundary. OpenSSL 3.6 and 3.5 are vulnerable to this issue. OpenSSL 3.6 users should upgrade to OpenSSL 3.6.2 once it is released. OpenSSL 3.5 users should upgrade to OpenSSL 3.5.6 once it is released. OpenSSL 3.4, 3.3, 3.0, 1.0.2 and 1.1.1 are not affected by this issue.

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-757 - Selection of Less-Secure Algorithm During Negotiation ('Algorithm Downgrade')

Assigner

openssl

References

5 references

URL	Tags
https://openssl-library.org/news/secadv/20260313.txt	vendor-advisory
https://github.com/openssl/openssl/commit/2157c9d…	patch
https://github.com/openssl/openssl/commit/85977e0…	patch
http://www.openwall.com/lists/oss-security/2026/03/13/3
https://cert-portal.siemens.com/productcert/html/…

Impacted products

2 products

Vendor	Product	Version
OpenSSL	OpenSSL	Affected: 3.6.0 , < 3.6.2 (semver) Affected: 3.5.0 , < 3.5.6 (semver)
Siemens	SIMATIC CN 4100	Affected: 0 , < V5.0 (custom)

Date Public

2026-03-13 14:00

Credits

Viktor Dukhovni Viktor Dukhovni

Show details on NVD website

JSON

To clipboard

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CVE-2025-40941 (GCVE-0-2025-40941)

Vulnerability from nvd – Published: 2025-12-09 10:44 – Updated: 2025-12-09 15:13

Summary

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0.1). The affected devices exposes server information in its responses. This could allow an attacker with network access to gain useful information, increasing the likelihood of targeted attacks.

Severity

4.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

5.3 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor

Assigner

siemens

References

1 reference

URL	Tags
https://cert-portal.siemens.com/productcert/html/…

Impacted products

1 product

Vendor	Product	Version
Siemens	SIMATIC CN 4100	Affected: 0 , < V4.0.1 (custom)

Show details on NVD website

JSON

To clipboard

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CVE-2025-40940 (GCVE-0-2025-40940)

Vulnerability from nvd – Published: 2025-12-09 10:44 – Updated: 2025-12-09 15:18

Summary

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0.1). The affected application exhibits inconsistent SNMP behavior, such as unexpected service availability and unreliable configuration handling across protocol versions. This could allow an attacker to access sensitive data, potentially leading to a breach of confidentiality.

Severity

4.9 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor

Assigner

siemens

References

1 reference

URL	Tags
https://cert-portal.siemens.com/productcert/html/…

Impacted products

1 product

Vendor	Product	Version
Siemens	SIMATIC CN 4100	Affected: 0 , < V4.0.1 (custom)

Show details on NVD website

JSON

To clipboard

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CVE-2025-40939 (GCVE-0-2025-40939)

Vulnerability from nvd – Published: 2025-12-09 10:44 – Updated: 2025-12-09 15:26

Summary

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0.1). The affected device contains a USB port which allows unauthenticated connections. This could allow an attacker with physical access to the device to trigger reboot that could cause denial of service condition.

Severity

4.6 (Medium)


                        
                          CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

5.1 (Medium)


                        
                          CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-284 - Improper Access Control

Assigner

siemens

References

1 reference

URL	Tags
https://cert-portal.siemens.com/productcert/html/…

Impacted products

1 product

Vendor	Product	Version
Siemens	SIMATIC CN 4100	Affected: 0 , < V4.0.1 (custom)

Show details on NVD website

JSON

To clipboard

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CVE-2025-40938 (GCVE-0-2025-40938)

Vulnerability from nvd – Published: 2025-12-09 10:44 – Updated: 2025-12-09 16:15

Summary

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0.1). The affected device stores sensitive information in the firmware. This could allow an attacker to access and misuse this information, potentially impacting the device’s confidentiality, integrity, and availability.

Severity

8.1 (High)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

9.2 (Critical)


                        
                          CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-798 - Use of Hard-coded Credentials

Assigner

siemens

References

1 reference

URL	Tags
https://cert-portal.siemens.com/productcert/html/…

Impacted products

1 product

Vendor	Product	Version
Siemens	SIMATIC CN 4100	Affected: 0 , < V4.0.1 (custom)

Show details on NVD website

JSON

To clipboard

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CVE-2025-40937 (GCVE-0-2025-40937)

Vulnerability from nvd – Published: 2025-12-09 10:44 – Updated: 2025-12-09 15:33

Summary

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0.1). The affected application do not properly validate input parameters in its REST API, resulting in improper handling of unexpected arguments. This could allow an authenticated attacker to execute arbitrary code with limited privileges.

Severity

8.3 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-77 - Improper Neutralization of Special Elements used in a Command ('Command Injection')

Assigner

siemens

References

1 reference

URL	Tags
https://cert-portal.siemens.com/productcert/html/…

Impacted products

1 product

Vendor	Product	Version
Siemens	SIMATIC CN 4100	Affected: 0 , < V4.0.1 (custom)

Show details on NVD website

JSON

To clipboard

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CVE-2025-38502 (GCVE-0-2025-38502)

Vulnerability from nvd – Published: 2025-08-16 09:34 – Updated: 2026-05-12 12:05

Title

bpf: Fix oob access in cgroup local storage

Summary

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix oob access in cgroup local storage Lonial reported that an out-of-bounds access in cgroup local storage can be crafted via tail calls. Given two programs each utilizing a cgroup local storage with a different value size, and one program doing a tail call into the other. The verifier will validate each of the indivial programs just fine. However, in the runtime context the bpf_cg_run_ctx holds an bpf_prog_array_item which contains the BPF program as well as any cgroup local storage flavor the program uses. Helpers such as bpf_get_local_storage() pick this up from the runtime context: ctx = container_of(current->bpf_ctx, struct bpf_cg_run_ctx, run_ctx); storage = ctx->prog_item->cgroup_storage[stype]; if (stype == BPF_CGROUP_STORAGE_SHARED) ptr = &READ_ONCE(storage->buf)->data[0]; else ptr = this_cpu_ptr(storage->percpu_buf); For the second program which was called from the originally attached one, this means bpf_get_local_storage() will pick up the former program's map, not its own. With mismatching sizes, this can result in an unintended out-of-bounds access. To fix this issue, we need to extend bpf_map_owner with an array of storage_cookie[] to match on i) the exact maps from the original program if the second program was using bpf_get_local_storage(), or ii) allow the tail call combination if the second program was not using any of the cgroup local storage maps.

Severity

No CVSS data available.

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/c1c74584b9b4043c5…
https://git.kernel.org/stable/c/66da7cee78590259b…
https://git.kernel.org/stable/c/7acfa07c585e3d7a6…
https://git.kernel.org/stable/c/41688d1fc5d163a6c…
https://git.kernel.org/stable/c/19341d5c59e8c7e85…
https://git.kernel.org/stable/c/abad3d0bad72a5213…
https://lists.debian.org/debian-lts-announce/2025…
https://cert-portal.siemens.com/productcert/html/…

Impacted products

3 products

Vendor	Product	Version
Linux	Linux	Affected: 7d9c3427894fe70d1347b4820476bf37736d2ff0 , < c1c74584b9b4043c52e41fec415226e582d266a3 (git) Affected: 7d9c3427894fe70d1347b4820476bf37736d2ff0 , < 66da7cee78590259b400e51a70622ccd41da7bb2 (git) Affected: 7d9c3427894fe70d1347b4820476bf37736d2ff0 , < 7acfa07c585e3d7a64654d38f0a5c762877d0b9b (git) Affected: 7d9c3427894fe70d1347b4820476bf37736d2ff0 , < 41688d1fc5d163a6c2c0e95c0419e2cb31a44648 (git) Affected: 7d9c3427894fe70d1347b4820476bf37736d2ff0 , < 19341d5c59e8c7e8528e40f8663e99d67810473c (git) Affected: 7d9c3427894fe70d1347b4820476bf37736d2ff0 , < abad3d0bad72a52137e0c350c59542d75ae4f513 (git)
Linux	Linux	Affected: 5.9 Unaffected: 0 , < 5.9 (semver) Unaffected: 5.15.192 , ≤ 5.15.* (semver) Unaffected: 6.1.151 , ≤ 6.1.* (semver) Unaffected: 6.6.105 , ≤ 6.6.* (semver) Unaffected: 6.12.46 , ≤ 6.12.* (semver) Unaffected: 6.16.1 , ≤ 6.16.* (semver) Unaffected: 6.17 , ≤ * (original_commit_for_fix)
Siemens	SIMATIC CN 4100	Affected: 0 , < V5.0 (custom)

Show details on NVD website

JSON

To clipboard

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CVE-2025-40593 (GCVE-0-2025-40593)

Vulnerability from nvd – Published: 2025-07-08 10:34 – Updated: 2025-07-08 16:11

Summary

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0). The affected application allows to control the device by storing arbitrary files in the SFTP folder of the device. This could allow an attacker to cause a denial of service condition.

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

7.1 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-20 - Improper Input Validation

Assigner

siemens

References

1 reference

URL	Tags
https://cert-portal.siemens.com/productcert/html/…

Impacted products

1 product

Vendor	Product	Version
Siemens	SIMATIC CN 4100	Affected: 0 , < V4.0 (custom)

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2025-40593",
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CVE-2024-32742 (GCVE-0-2024-32742)

Vulnerability from nvd – Published: 2024-05-14 10:02 – Updated: 2024-08-02 02:20

Summary

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V3.0). The affected device contains an unrestricted USB port. An attacker with local access to the device could potentially misuse the port for booting another operating system and gain complete read/write access to the filesystem.

Severity

7.6 (High)


                        
                          CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-1326 - Missing Immutable Root of Trust in Hardware

Assigner

siemens

References

1 reference

URL	Tags
https://cert-portal.siemens.com/productcert/html/…

Impacted products

2 products

Vendor	Product	Version
Siemens	SIMATIC CN 4100	Affected: 0 , < V3.0 (custom)
siemens	simatic_cn_4100	Affected: 0 , < 3.0 (custom) cpe:2.3:a:siemens:simatic_cn_4100::::::::

Show details on NVD website

JSON

To clipboard

{
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CVE-2024-32741 (GCVE-0-2024-32741)

Vulnerability from nvd – Published: 2024-05-14 10:02 – Updated: 2024-08-02 02:20

Summary

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V3.0). The affected device contains hard coded password which is used for the privileged system user `root` and for the boot loader `GRUB` by default . An attacker who manages to crack the password hash gains root access to the device.

Severity

10 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-259 - Use of Hard-coded Password

Assigner

siemens

References

1 reference

URL	Tags
https://cert-portal.siemens.com/productcert/html/…

Impacted products

2 products

Vendor	Product	Version
Siemens	SIMATIC CN 4100	Affected: 0 , < V3.0 (custom)
siemens	simatic_cn_4100	Affected: 0 , < 3.0 (custom) cpe:2.3:a:siemens:simatic_cn_4100::::::::

Show details on NVD website

JSON

To clipboard

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CVE-2024-32740 (GCVE-0-2024-32740)

Vulnerability from nvd – Published: 2024-05-14 10:02 – Updated: 2024-08-02 02:20

Summary

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V3.0). The affected device contains undocumented users and credentials. An attacker could misuse the credentials to compromise the device locally or over the network.

Severity

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-798 - Use of Hard-coded Credentials

Assigner

siemens

References

1 reference

URL	Tags
https://cert-portal.siemens.com/productcert/html/…

Impacted products

2 products

Vendor	Product	Version
Siemens	SIMATIC CN 4100	Affected: 0 , < V3.0 (custom)
siemens	simatic_cn_4100	Affected: 0 , < 3.0 (custom) cpe:2.3:a:siemens:simatic_cn_4100::::::::

Show details on NVD website

JSON

To clipboard

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CVE-2023-49621 (GCVE-0-2023-49621)

Vulnerability from nvd – Published: 2024-01-09 10:00 – Updated: 2025-06-17 20:39

Summary

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V2.7). The "intermediate installation" system state of the affected application uses default credential with admin privileges. An attacker could use the credentials to gain complete control of the affected device.

Severity

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-1392 - Use of Default Credentials

Assigner

siemens

References

1 reference

URL	Tags
https://cert-portal.siemens.com/productcert/pdf/s…

Impacted products

1 product

Vendor	Product	Version
Siemens	SIMATIC CN 4100	Affected: All versions < V2.7

Show details on NVD website

JSON

To clipboard

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CVE-2023-49252 (GCVE-0-2023-49252)

Vulnerability from nvd – Published: 2024-01-09 10:00 – Updated: 2025-06-17 20:39

Summary

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V2.7). The affected application allows IP configuration change without authentication to the device. This could allow an attacker to cause denial of service condition.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-20 - Improper Input Validation

Assigner

siemens

References

1 reference

URL	Tags
https://cert-portal.siemens.com/productcert/pdf/s…

Impacted products

1 product

Vendor	Product	Version
Siemens	SIMATIC CN 4100	Affected: All versions < V2.7

Show details on NVD website

JSON

To clipboard

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CVE-2023-49251 (GCVE-0-2023-49251)

Vulnerability from nvd – Published: 2024-01-09 10:00 – Updated: 2024-11-14 15:13

Summary

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V2.7). The "intermediate installation" system state of the affected application allows an attacker to add their own login credentials to the device. This allows an attacker to remotely login as root and take control of the device even after the affected device is fully set up.

Severity

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-639 - Authorization Bypass Through User-Controlled Key

Assigner

siemens

References

1 reference

URL	Tags
https://cert-portal.siemens.com/productcert/pdf/s…

Impacted products

1 product

Vendor	Product	Version
Siemens	SIMATIC CN 4100	Affected: All versions < V2.7

Show details on NVD website

JSON

To clipboard

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CVE-2026-22925 (GCVE-0-2026-22925)

Vulnerability from cvelistv5 – Published: 2026-05-12 08:20 – Updated: 2026-05-12 13:27

Summary

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V5.0). The affected application is susceptible to resource exhaustion when subjected to high volume of TCP SYN packets This could allow an attacker to render the service unavailable and cause denial-of-service conditions by overwhelming system resources.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-770 - Allocation of Resources Without Limits or Throttling

Assigner

siemens

References

1 reference

URL	Tags
https://cert-portal.siemens.com/productcert/html/…

Impacted products

1 product

Vendor	Product	Version
Siemens	SIMATIC CN 4100	Affected: 0 , < V5.0 (custom)

Show details on NVD website

JSON

To clipboard

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CVE-2026-22924 (GCVE-0-2026-22924)

Vulnerability from cvelistv5 – Published: 2026-05-12 08:20 – Updated: 2026-05-13 09:51

Summary

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V5.0). The affected application does not properly restrict unauthenticated connections and is susceptible to resource exhaustion conditions. This could allow an attacker to disrupt normal operations or perform unauthorized actions, potentially impacting system availability and integrity.

Severity

9.1 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

8.8 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-306 - Missing Authentication for Critical Function

Assigner

siemens

References

1 reference

URL	Tags
https://cert-portal.siemens.com/productcert/html/…

Impacted products

1 product

Vendor	Product	Version
Siemens	SIMATIC CN 4100	Affected: 0 , < V5.0 (custom)

Show details on NVD website

JSON

To clipboard

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CVE-2026-2673 (GCVE-0-2026-2673)

Vulnerability from cvelistv5 – Published: 2026-03-13 13:23 – Updated: 2026-05-18 19:23

Title

OpenSSL TLS 1.3 server may choose unexpected key agreement group

Summary

Issue summary: An OpenSSL TLS 1.3 server may fail to negotiate the expected preferred key exchange group when its key exchange group configuration includes the default by using the 'DEFAULT' keyword. Impact summary: A less preferred key exchange may be used even when a more preferred group is supported by both client and server, if the group was not included among the client's initial predicated keyshares. This will sometimes be the case with the new hybrid post-quantum groups, if the client chooses to defer their use until specifically requested by the server. If an OpenSSL TLS 1.3 server's configuration uses the 'DEFAULT' keyword to interpolate the built-in default group list into its own configuration, perhaps adding or removing specific elements, then an implementation defect causes the 'DEFAULT' list to lose its 'tuple' structure, and all server-supported groups were treated as a single sufficiently secure 'tuple', with the server not sending a Hello Retry Request (HRR) even when a group in a more preferred tuple was mutually supported. As a result, the client and server might fail to negotiate a mutually supported post-quantum key agreement group, such as 'X25519MLKEM768', if the client's configuration results in only 'classical' groups (such as 'X25519' being the only ones in the client's initial keyshare prediction). OpenSSL 3.5 and later support a new syntax for selecting the most preferred TLS 1.3 key agreement group on TLS servers. The old syntax had a single 'flat' list of groups, and treated all the supported groups as sufficiently secure. If any of the keyshares predicted by the client were supported by the server the most preferred among these was selected, even if other groups supported by the client, but not included in the list of predicted keyshares would have been more preferred, if included. The new syntax partitions the groups into distinct 'tuples' of roughly equivalent security. Within each tuple the most preferred group included among the client's predicted keyshares is chosen, but if the client supports a group from a more preferred tuple, but did not predict any corresponding keyshares, the server will ask the client to retry the ClientHello (by issuing a Hello Retry Request or HRR) with the most preferred mutually supported group. The above works as expected when the server's configuration uses the built-in default group list, or explicitly defines its own list by directly defining the various desired groups and group 'tuples'. No OpenSSL FIPS modules are affected by this issue, the code in question lies outside the FIPS boundary. OpenSSL 3.6 and 3.5 are vulnerable to this issue. OpenSSL 3.6 users should upgrade to OpenSSL 3.6.2 once it is released. OpenSSL 3.5 users should upgrade to OpenSSL 3.5.6 once it is released. OpenSSL 3.4, 3.3, 3.0, 1.0.2 and 1.1.1 are not affected by this issue.

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-757 - Selection of Less-Secure Algorithm During Negotiation ('Algorithm Downgrade')

Assigner

openssl

References

5 references

URL	Tags
https://openssl-library.org/news/secadv/20260313.txt	vendor-advisory
https://github.com/openssl/openssl/commit/2157c9d…	patch
https://github.com/openssl/openssl/commit/85977e0…	patch
http://www.openwall.com/lists/oss-security/2026/03/13/3
https://cert-portal.siemens.com/productcert/html/…

Impacted products

2 products

Vendor	Product	Version
OpenSSL	OpenSSL	Affected: 3.6.0 , < 3.6.2 (semver) Affected: 3.5.0 , < 3.5.6 (semver)
Siemens	SIMATIC CN 4100	Affected: 0 , < V5.0 (custom)

Date Public

2026-03-13 14:00

Credits

Viktor Dukhovni Viktor Dukhovni

Show details on NVD website

JSON

To clipboard

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CVE-2025-40941 (GCVE-0-2025-40941)

Vulnerability from cvelistv5 – Published: 2025-12-09 10:44 – Updated: 2025-12-09 15:13

Summary

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0.1). The affected devices exposes server information in its responses. This could allow an attacker with network access to gain useful information, increasing the likelihood of targeted attacks.

Severity

4.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

5.3 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor

Assigner

siemens

References

1 reference

URL	Tags
https://cert-portal.siemens.com/productcert/html/…

Impacted products

1 product

Vendor	Product	Version
Siemens	SIMATIC CN 4100	Affected: 0 , < V4.0.1 (custom)

Show details on NVD website

JSON

To clipboard

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CVE-2025-40940 (GCVE-0-2025-40940)

Vulnerability from cvelistv5 – Published: 2025-12-09 10:44 – Updated: 2025-12-09 15:18

Summary

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0.1). The affected application exhibits inconsistent SNMP behavior, such as unexpected service availability and unreliable configuration handling across protocol versions. This could allow an attacker to access sensitive data, potentially leading to a breach of confidentiality.

Severity

4.9 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor

Assigner

siemens

References

1 reference

URL	Tags
https://cert-portal.siemens.com/productcert/html/…

Impacted products

1 product

Vendor	Product	Version
Siemens	SIMATIC CN 4100	Affected: 0 , < V4.0.1 (custom)

Show details on NVD website

JSON

To clipboard

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CVE-2025-40939 (GCVE-0-2025-40939)

Vulnerability from cvelistv5 – Published: 2025-12-09 10:44 – Updated: 2025-12-09 15:26

Summary

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0.1). The affected device contains a USB port which allows unauthenticated connections. This could allow an attacker with physical access to the device to trigger reboot that could cause denial of service condition.

Severity

4.6 (Medium)


                        
                          CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

5.1 (Medium)


                        
                          CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-284 - Improper Access Control

Assigner

siemens

References

1 reference

URL	Tags
https://cert-portal.siemens.com/productcert/html/…

Impacted products

1 product

Vendor	Product	Version
Siemens	SIMATIC CN 4100	Affected: 0 , < V4.0.1 (custom)

Show details on NVD website

JSON

To clipboard

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CVE-2025-40938 (GCVE-0-2025-40938)

Vulnerability from cvelistv5 – Published: 2025-12-09 10:44 – Updated: 2025-12-09 16:15

Summary

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0.1). The affected device stores sensitive information in the firmware. This could allow an attacker to access and misuse this information, potentially impacting the device’s confidentiality, integrity, and availability.

Severity

8.1 (High)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

9.2 (Critical)


                        
                          CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-798 - Use of Hard-coded Credentials

Assigner

siemens

References

1 reference

URL	Tags
https://cert-portal.siemens.com/productcert/html/…

Impacted products

1 product

Vendor	Product	Version
Siemens	SIMATIC CN 4100	Affected: 0 , < V4.0.1 (custom)

Show details on NVD website

JSON

To clipboard

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CVE-2025-40937 (GCVE-0-2025-40937)

Vulnerability from cvelistv5 – Published: 2025-12-09 10:44 – Updated: 2025-12-09 15:33

Summary

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0.1). The affected application do not properly validate input parameters in its REST API, resulting in improper handling of unexpected arguments. This could allow an authenticated attacker to execute arbitrary code with limited privileges.

Severity

8.3 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-77 - Improper Neutralization of Special Elements used in a Command ('Command Injection')

Assigner

siemens

References

1 reference

URL	Tags
https://cert-portal.siemens.com/productcert/html/…

Impacted products

1 product

Vendor	Product	Version
Siemens	SIMATIC CN 4100	Affected: 0 , < V4.0.1 (custom)

Show details on NVD website

JSON

To clipboard

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CVE-2025-38502 (GCVE-0-2025-38502)

Vulnerability from cvelistv5 – Published: 2025-08-16 09:34 – Updated: 2026-05-12 12:05

Title

bpf: Fix oob access in cgroup local storage

Summary

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix oob access in cgroup local storage Lonial reported that an out-of-bounds access in cgroup local storage can be crafted via tail calls. Given two programs each utilizing a cgroup local storage with a different value size, and one program doing a tail call into the other. The verifier will validate each of the indivial programs just fine. However, in the runtime context the bpf_cg_run_ctx holds an bpf_prog_array_item which contains the BPF program as well as any cgroup local storage flavor the program uses. Helpers such as bpf_get_local_storage() pick this up from the runtime context: ctx = container_of(current->bpf_ctx, struct bpf_cg_run_ctx, run_ctx); storage = ctx->prog_item->cgroup_storage[stype]; if (stype == BPF_CGROUP_STORAGE_SHARED) ptr = &READ_ONCE(storage->buf)->data[0]; else ptr = this_cpu_ptr(storage->percpu_buf); For the second program which was called from the originally attached one, this means bpf_get_local_storage() will pick up the former program's map, not its own. With mismatching sizes, this can result in an unintended out-of-bounds access. To fix this issue, we need to extend bpf_map_owner with an array of storage_cookie[] to match on i) the exact maps from the original program if the second program was using bpf_get_local_storage(), or ii) allow the tail call combination if the second program was not using any of the cgroup local storage maps.

Severity

No CVSS data available.

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/c1c74584b9b4043c5…
https://git.kernel.org/stable/c/66da7cee78590259b…
https://git.kernel.org/stable/c/7acfa07c585e3d7a6…
https://git.kernel.org/stable/c/41688d1fc5d163a6c…
https://git.kernel.org/stable/c/19341d5c59e8c7e85…
https://git.kernel.org/stable/c/abad3d0bad72a5213…
https://lists.debian.org/debian-lts-announce/2025…
https://cert-portal.siemens.com/productcert/html/…

Impacted products

3 products

Vendor	Product	Version
Linux	Linux	Affected: 7d9c3427894fe70d1347b4820476bf37736d2ff0 , < c1c74584b9b4043c52e41fec415226e582d266a3 (git) Affected: 7d9c3427894fe70d1347b4820476bf37736d2ff0 , < 66da7cee78590259b400e51a70622ccd41da7bb2 (git) Affected: 7d9c3427894fe70d1347b4820476bf37736d2ff0 , < 7acfa07c585e3d7a64654d38f0a5c762877d0b9b (git) Affected: 7d9c3427894fe70d1347b4820476bf37736d2ff0 , < 41688d1fc5d163a6c2c0e95c0419e2cb31a44648 (git) Affected: 7d9c3427894fe70d1347b4820476bf37736d2ff0 , < 19341d5c59e8c7e8528e40f8663e99d67810473c (git) Affected: 7d9c3427894fe70d1347b4820476bf37736d2ff0 , < abad3d0bad72a52137e0c350c59542d75ae4f513 (git)
Linux	Linux	Affected: 5.9 Unaffected: 0 , < 5.9 (semver) Unaffected: 5.15.192 , ≤ 5.15.* (semver) Unaffected: 6.1.151 , ≤ 6.1.* (semver) Unaffected: 6.6.105 , ≤ 6.6.* (semver) Unaffected: 6.12.46 , ≤ 6.12.* (semver) Unaffected: 6.16.1 , ≤ 6.16.* (semver) Unaffected: 6.17 , ≤ * (original_commit_for_fix)
Siemens	SIMATIC CN 4100	Affected: 0 , < V5.0 (custom)

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JSON

To clipboard

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CVE-2025-40593 (GCVE-0-2025-40593)

Vulnerability from cvelistv5 – Published: 2025-07-08 10:34 – Updated: 2025-07-08 16:11

Summary

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0). The affected application allows to control the device by storing arbitrary files in the SFTP folder of the device. This could allow an attacker to cause a denial of service condition.

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

7.1 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-20 - Improper Input Validation

Assigner

siemens

References

1 reference

URL	Tags
https://cert-portal.siemens.com/productcert/html/…

Impacted products

1 product

Vendor	Product	Version
Siemens	SIMATIC CN 4100	Affected: 0 , < V4.0 (custom)

Show details on NVD website

JSON

To clipboard

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CVE-2024-32742 (GCVE-0-2024-32742)

Vulnerability from cvelistv5 – Published: 2024-05-14 10:02 – Updated: 2024-08-02 02:20

Summary

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V3.0). The affected device contains an unrestricted USB port. An attacker with local access to the device could potentially misuse the port for booting another operating system and gain complete read/write access to the filesystem.

Severity

7.6 (High)


                        
                          CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-1326 - Missing Immutable Root of Trust in Hardware

Assigner

siemens

References

1 reference

URL	Tags
https://cert-portal.siemens.com/productcert/html/…

Impacted products

2 products

Vendor	Product	Version
Siemens	SIMATIC CN 4100	Affected: 0 , < V3.0 (custom)
siemens	simatic_cn_4100	Affected: 0 , < 3.0 (custom) cpe:2.3:a:siemens:simatic_cn_4100::::::::

Show details on NVD website

JSON

To clipboard

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CVE-2024-32741 (GCVE-0-2024-32741)

Vulnerability from cvelistv5 – Published: 2024-05-14 10:02 – Updated: 2024-08-02 02:20

Summary

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V3.0). The affected device contains hard coded password which is used for the privileged system user `root` and for the boot loader `GRUB` by default . An attacker who manages to crack the password hash gains root access to the device.

Severity

10 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-259 - Use of Hard-coded Password

Assigner

siemens

References

1 reference

URL	Tags
https://cert-portal.siemens.com/productcert/html/…

Impacted products

2 products

Vendor	Product	Version
Siemens	SIMATIC CN 4100	Affected: 0 , < V3.0 (custom)
siemens	simatic_cn_4100	Affected: 0 , < 3.0 (custom) cpe:2.3:a:siemens:simatic_cn_4100::::::::

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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CVE-2024-32740 (GCVE-0-2024-32740)

Vulnerability from cvelistv5 – Published: 2024-05-14 10:02 – Updated: 2024-08-02 02:20

Summary

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V3.0). The affected device contains undocumented users and credentials. An attacker could misuse the credentials to compromise the device locally or over the network.

Severity

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-798 - Use of Hard-coded Credentials

Assigner

siemens

References

1 reference

URL	Tags
https://cert-portal.siemens.com/productcert/html/…

Impacted products

2 products

Vendor	Product	Version
Siemens	SIMATIC CN 4100	Affected: 0 , < V3.0 (custom)
siemens	simatic_cn_4100	Affected: 0 , < 3.0 (custom) cpe:2.3:a:siemens:simatic_cn_4100::::::::

Show details on NVD website

JSON

To clipboard

{
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CVE-2023-49621 (GCVE-0-2023-49621)

Vulnerability from cvelistv5 – Published: 2024-01-09 10:00 – Updated: 2025-06-17 20:39

Summary

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V2.7). The "intermediate installation" system state of the affected application uses default credential with admin privileges. An attacker could use the credentials to gain complete control of the affected device.

Severity

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-1392 - Use of Default Credentials

Assigner

siemens

References

1 reference

URL	Tags
https://cert-portal.siemens.com/productcert/pdf/s…

Impacted products

1 product

Vendor	Product	Version
Siemens	SIMATIC CN 4100	Affected: All versions < V2.7

Show details on NVD website

JSON

To clipboard

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Find a vulnerability

Search criteria

36 vulnerabilities found for simatic_cn_4100_firmware by siemens

CVE-2026-22925 (GCVE-0-2026-22925)

CVE-2026-22924 (GCVE-0-2026-22924)

CVE-2026-2673 (GCVE-0-2026-2673)

CVE-2025-40941 (GCVE-0-2025-40941)

CVE-2025-40940 (GCVE-0-2025-40940)

CVE-2025-40939 (GCVE-0-2025-40939)

CVE-2025-40938 (GCVE-0-2025-40938)

CVE-2025-40937 (GCVE-0-2025-40937)

CVE-2025-38502 (GCVE-0-2025-38502)

CVE-2025-40593 (GCVE-0-2025-40593)

CVE-2024-32742 (GCVE-0-2024-32742)

CVE-2024-32741 (GCVE-0-2024-32741)

CVE-2024-32740 (GCVE-0-2024-32740)

CVE-2023-49621 (GCVE-0-2023-49621)

CVE-2023-49252 (GCVE-0-2023-49252)

CVE-2023-49251 (GCVE-0-2023-49251)

CVE-2026-22925 (GCVE-0-2026-22925)

CVE-2026-22924 (GCVE-0-2026-22924)

CVE-2026-2673 (GCVE-0-2026-2673)

CVE-2025-40941 (GCVE-0-2025-40941)

CVE-2025-40940 (GCVE-0-2025-40940)

CVE-2025-40939 (GCVE-0-2025-40939)

CVE-2025-40938 (GCVE-0-2025-40938)

CVE-2025-40937 (GCVE-0-2025-40937)

CVE-2025-38502 (GCVE-0-2025-38502)

CVE-2025-40593 (GCVE-0-2025-40593)

CVE-2024-32742 (GCVE-0-2024-32742)

CVE-2024-32741 (GCVE-0-2024-32741)

CVE-2024-32740 (GCVE-0-2024-32740)

CVE-2023-49621 (GCVE-0-2023-49621)