Common Weakness Enumeration
CWE-190
AllowedInteger Overflow or Wraparound
Abstraction: Base · Status: Stable
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
4582 vulnerabilities reference this CWE, most recent first.
CVE-2026-102804 (GCVE-0-2026-102804)
Vulnerability from cvelistv5 – Published: 2026-09-30 00:00 – Updated: 2026-10-02 12:43
VLAI
EPSS
VEX
Title
Nothings stb stb_hexwave.h hexwave_init integer overflow
Summary
A vulnerability was detected in Nothings stb up to 2c980bb59875b0d32144a71867fbdebb2f77cd20. The impacted element is the function hexwave_init in the library stb_hexwave.h. Performing a manipulation of the argument width/oversample results in integer overflow. Remote exploitation of the attack is possible. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 12:43 UTC
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/411496 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/411496/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-102804 | third-party-advisory |
| https://vuldb.com/submit/944861 | third-party-advisory |
| https://github.com/nothings/stb/issues/1961 | issue-tracking |
| https://github.com/user-attachments/files/3135161… | exploit |
| https://github.com/nothings/stb/ | product |
Impacted products
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CVE-2026-102692 (GCVE-0-2026-102692)
Vulnerability from cvelistv5 – Published: 2026-10-16 16:48 – Updated: 2026-10-16 21:20
VLAI
EPSS
VEX
Title
RIOT: Potential integer overflow in nanocoap Block2 handling leading to out-of-bounds memory access
Summary
RIOT is an open-source microcontroller operating system designed for Internet of Things devices and other embedded systems. Prior to 2026.07, nanocoap accepts oversized CoAP Block2 option values without enforcing the 20-bit maximum block number, allowing block offset multiplication to overflow on 32-bit targets. The affected master baseline is commit aeeae69e; the verified fix is later on master and remains unreleased. The oversized value passes from coap_get_blockopt() to coap_block_slicer_init(). A remote CoAP client can send a malformed Block2 option that produces an invalid slice range and can cause out-of-bounds memory access, denial of service, or memory corruption. This vulnerability is fixed in 2026.07.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 20:52 UTC
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/RIOT-OS/RIOT/security/advisori… | x_refsource_CONFIRM |
| https://github.com/RIOT-OS/RIOT/commit/6b283ace35… | x_refsource_MISC |
| https://github.com/RIOT-OS/RIOT/commit/ee1fa0ef91… | x_refsource_MISC |
| https://github.com/RIOT-OS/RIOT/releases/tag/2026.07 | x_refsource_MISC |
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CVE-2026-102633 (GCVE-0-2026-102633)
Vulnerability from cvelistv5 – Published: 2026-09-29 16:04 – Updated: 2026-09-29 16:52
VLAI
EPSS
VEX
Title
libexpat 2.7.2 through 2.8.5 Integer Overflow in expat_realloc
Summary
libexpat versions 2.7.2 through 2.8.5 contain an integer overflow vulnerability in expat_realloc() function on 32-bit platforms when computing allocation sizes. Attackers supplying malicious XML to applications parsing with vulnerable libexpat can cause heap buffer overflow, memory corruption, or denial of service.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-29 16:52 UTC
CWE
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/libexpat/libexpat/pull/1392 | issue-trackingpatch |
| https://github.com/libexpat/libexpat/commit/20980… | patch |
| https://github.com/libexpat/libexpat/blob/R_2_8_5… | technical-description |
| https://github.com/libexpat/libexpat | product |
| https://www.vulncheck.com/advisories/libexpat-2.7… | third-party-advisory |
Impacted products
Date Public
2026-09-25 00:00
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CVE-2026-102621 (GCVE-0-2026-102621)
Vulnerability from cvelistv5 – Published: 2026-09-29 21:30 – Updated: 2026-09-30 19:15 X_Open Source
VLAI
EPSS
VEX
Title
Freedesktop Poppler SplashClip.cc clipToPath integer overflow
Summary
A vulnerability was identified in Freedesktop Poppler up to 26.08.0. Affected is the function SplashClip::clipToPath of the file splash/SplashClip.cc. Such manipulation leads to integer overflow. The attack can only be performed from a local environment. The exploit is publicly available and might be used. Upgrading to version 26.09.0 is able to address this issue. The name of the patch is 323c91036d99926a8b90dc14329f7b40aece22f8. It is recommended to upgrade the affected component.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 19:15 UTC
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/411411 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/411411/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-102621 | third-party-advisory |
| https://vuldb.com/submit/942349 | third-party-advisory |
| https://gitlab.freedesktop.org/poppler/poppler/-/… | related |
| https://gitlab.freedesktop.org/poppler/poppler/-/… | patch |
| https://github.com/r1ck9-2q/cve_summit/blob/main/… | exploit |
| https://gitlab.freedesktop.org/poppler/poppler/-/… | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Freedesktop | Poppler |
Affected:
26.08
Unaffected: 26.09.0 cpe:2.3:a:freedesktop:poppler:*:*:*:*:*:*:*:* |
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CVE-2026-102620 (GCVE-0-2026-102620)
Vulnerability from cvelistv5 – Published: 2026-09-29 20:30 – Updated: 2026-10-02 12:26 X_Open Source
VLAI
EPSS
VEX
Title
Freedesktop Poppler FoFiTrueType.cc cvtSfnts integer overflow
Summary
A vulnerability was determined in Freedesktop Poppler 26.06.0/26.07.0/26.08.0. This impacts the function FoFiTrueType::cvtSfnts of the file fofi/FoFiTrueType.cc. This manipulation causes integer overflow. The attack can only be executed locally. The exploit has been publicly disclosed and may be utilized. Patch name: 245d3c6823377755f2c1d5fdddd010279c6ed94d. It is suggested to install a patch to address this issue.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 12:26 UTC
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/411410 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/411410/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-102620 | third-party-advisory |
| https://vuldb.com/submit/942348 | third-party-advisory |
| https://gitlab.freedesktop.org/poppler/poppler/-/… | related |
| https://gitlab.freedesktop.org/poppler/poppler/-/… | patch |
| https://github.com/r1ck9-2q/cve_summit/blob/main/… | exploit |
| https://gitlab.freedesktop.org/poppler/poppler/-/… | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Freedesktop | Poppler |
Affected:
26.06.0
Affected: 26.07.0 Affected: 26.08.0 cpe:2.3:a:freedesktop:poppler:*:*:*:*:*:*:*:* |
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CVE-2026-102510 (GCVE-0-2026-102510)
Vulnerability from cvelistv5 – Published: 2026-09-30 08:01 – Updated: 2026-09-30 14:40
VLAI
EPSS
VEX
Title
Apache PLC4X: Go binding: unbounded allocation and framing failures on wire-controlled lengths
Summary
Integer Overflow, Improper Validation of Array Index, Uncontrolled Recursion and Memory Allocation with Excessive Size Value in the Go implementation of Apache PLC4X (PLC4Go) allow a malicious device, or an attacker able to inject network traffic, to crash or exhaust the memory of the client application,
causing a denial of service.
The individual defects are:
- Generated parsers pre-allocate arrays with the element count claimed on the wire (0.13.0 through 0.13.1).
- Transport read helpers allocate buffers of the size claimed on the wire without an upper bound.
- ADS and KNXnet/IP response handling indexes into received data without checking its length, causing a panic.
- ADS and EIP frame-length handling accepts, or arithmetically wraps to, a length of zero, breaking message framing.
- Recursive protocol types are parsed without a nesting-depth limit. The same defect in the Java implementation is covered by CVE-2026-102509 https://cveprocess.apache.org/cve5/CVE-2026-102509 .
Additionally, length and position arithmetic in generated serializers was performed in 16-bit integers. If an application forwards attacker-influenced payloads larger than 8 KB, the length field wraps, and the remainder of the payload may be interpreted by the receiving device (for example, an ADS PLC) as
additional, independent protocol messages.
This issue affects Apache PLC4X: from 0.11.0 before 1.0.0. PLC4Go is consumed as the Go module github.com/apache/plc4x/plc4go; versions refer to the corresponding Apache PLC4X releases.
Users are recommended to upgrade to version 1.0.0, which fixes the issue.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 14:40 UTC
CWE
- CWE-789 - Memory Allocation with Excessive Size Value. This covers the array pre-allocation (f017) and the transport read buffers (f018)
- CWE-190 - Integer Overflow or Wraparound. This covers the uint16 length and position wraps (f009) and the EIP packet size wrapping to 0 (f014)
- CWE-129 - Improper Validation of Array Index. This covers the ADS and KNXnet/IP index panics (f013, f015)
- CWE-674 - Uncontrolled Recursion. This covers the Go part of f045
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://lists.apache.org/thread.html/lw66k49p1jf7… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache PLC4X |
Affected:
0.11.0 , < 1.0.0
(semver)
Unaffected: 1.0.0 (semver) |
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CVE-2026-102504 (GCVE-0-2026-102504)
Vulnerability from cvelistv5 – Published: 2026-10-01 13:11 – Updated: 2026-10-01 19:31
VLAI
EPSS
VEX
Title
Imager versions before 1.037 for Perl exit the process reading a raw image with an out-of-range raw_datachannels value in i_readraw_wiol
Summary
Imager versions before 1.037 for Perl exit the process reading a raw image with an out-of-range raw_datachannels value in i_readraw_wiol.
Nothing range-checks raw_datachannels. The line buffer is sized as the image width times the channel count with no overflow check, so a negative or very large count requests an excessive allocation. When it fails, Imager's allocator calls exit(3).
Passing an untrusted raw_datachannels value to Imager->read() triggers an uncatchable exit.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-01 19:31 UTC
Assigner
References
4 references
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CVE-2026-102036 (GCVE-0-2026-102036)
Vulnerability from cvelistv5 – Published: 2026-10-14 16:50 – Updated: 2026-10-14 20:26
VLAI
EPSS
VEX
Title
Junos OS and Junos OS Evolved: An EVPN default-gateway route burst causes l2ald denial of service
Summary
An Integer Overflow or Wraparound vulnerability in the l2ald process of Juniper Networks Junos OS and Junos OS Evolved allows a configured EVPN BGP peer to cause a denial of service via EVPN Type-2 MAC/IP routes.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-14 20:06 UTC
CWE
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://supportportal.juniper.net/JSA112187 | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS |
Affected:
0 , < 23.2R2-S7.7
(custom)
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|
| Juniper Networks | Junos OS Evolved |
Affected:
0 , < 23.2R2-S7.7-EVO
(custom)
Affected: 23.4 , < 23.4R2-S8.11-EVO (custom) Affected: 24.2 , < 24.2R2-S5.6-EVO (custom) Affected: 24.4 , < 24.4R2-S5-EVO (custom) Affected: 25.2 , < 25.2R2-S2-EVO (custom) Affected: 25.4 , < 25.4R1-S3-EVO (custom) Affected: 26.2 , < 26.2R1-S2-EVO (custom) Affected: 23.4X100 (custom) Affected: 25.2X100 , < 25.2X100-D35-EVO (custom) Affected: 25.4X300 , < 25.4X300-D40-EVO (custom) |
Date Public
2026-10-14 16:00
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CVE-2026-102024 (GCVE-0-2026-102024)
Vulnerability from cvelistv5 – Published: 2026-10-14 16:47 – Updated: 2026-10-16 16:42
VLAI
EPSS
VEX
Title
Junos OS and Junos OS Evolved: An attacker causes a routing daemon crash when BGP extended-nexthop-tunnel is used
Summary
An Integer Overflow or Wraparound vulnerability in the routing daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an authenticated BGP peer to cause a denial of service via BGP route updates when extended-nexthop-tunnel is enabled.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 16:42 UTC
CWE
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://supportportal.juniper.net/JSA112187 | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS |
Affected:
0 , < 23.2R2-S7.7
(custom)
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|
| Juniper Networks | Junos OS Evolved |
Affected:
0 , < 23.2R2-S7.7-EVO
(custom)
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Date Public
2026-10-14 16:00
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CVE-2026-101972 (GCVE-0-2026-101972)
Vulnerability from cvelistv5 – Published: 2026-10-14 17:15 – Updated: 2026-10-14 20:26
VLAI
EPSS
VEX
Title
Junos OS and Junos OS Evolved: Malformed OSPF packets causes routing disruption when OSPF is enabled
Summary
An Integer Overflow or Wraparound vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker to cause a denial of service via specific OSPFv2 packets sent on an OSPF-enabled interface.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-14 20:03 UTC
CWE
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://supportportal.juniper.net/JSA112187 | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS |
Affected:
0 , < 23.2R2-S7.7
(custom)
Affected: 23.4 , < 23.4R2-S8.13 (custom) Affected: 24.2 , < 24.2R2-S5.5 (custom) Affected: 24.4 , < 24.4R2-S5 (custom) Affected: 25.2 , < 25.2R2-S2 (custom) Affected: 25.4 , < 25.4R1-S3 (custom) Affected: 26.2 , < 26.2R1-S2 (custom) |
|
| Juniper Networks | Junos OS Evolved |
Affected:
0 , < 23.2R2-S7.7-EVO
(custom)
Affected: 23.4 , < 23.4R2-S8.11-EVO (custom) Affected: 24.2 , < 24.2R2-S5.6-EVO (custom) Affected: 24.4 , < 24.4R2-S5-EVO (custom) Affected: 25.2 , < 25.2R2-S2-EVO (custom) Affected: 25.4 , < 25.4R1-S3-EVO (custom) Affected: 26.2 , < 26.2R1-S2-EVO (custom) Affected: 23.4X100 (custom) Affected: 25.2X100 , < 25.2X100-D35-EVO (custom) Affected: 25.4X300 , < 25.4X300-D40-EVO (custom) |
Date Public
2026-10-14 16:00
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Mitigation
Requirements
Ensure that all protocols are strictly defined, such that all out-of-bounds behavior can be identified simply, and require strict conformance to the protocol.
Mitigation MIT-3
Requirements
Strategy: Language Selection
- Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
- If possible, choose a language or compiler that performs automatic bounds checking.
Mitigation MIT-4
Architecture and Design
Strategy: Libraries or Frameworks
- Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid [REF-1482].
- Use libraries or frameworks that make it easier to handle numbers without unexpected consequences.
- Examples include safe integer handling packages such as SafeInt (C++) or IntegerLib (C or C++). [REF-106]
Mitigation MIT-8
Implementation
Strategy: Input Validation
- Perform input validation on any numeric input by ensuring that it is within the expected range. Enforce that the input meets both the minimum and maximum requirements for the expected range.
- Use unsigned integers where possible. This makes it easier to perform validation for integer overflows. When signed integers are required, ensure that the range check includes minimum values as well as maximum values.
Mitigation MIT-36
Implementation
- Understand the programming language's underlying representation and how it interacts with numeric calculation (CWE-681). Pay close attention to byte size discrepancies, precision, signed/unsigned distinctions, truncation, conversion and casting between types, "not-a-number" calculations, and how the language handles numbers that are too large or too small for its underlying representation. [REF-7]
- Also be careful to account for 32-bit, 64-bit, and other potential differences that may affect the numeric representation.
Mitigation MIT-15
Architecture and Design
For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.
Mitigation MIT-26
Implementation
Strategy: Compilation or Build Hardening
Examine compiler warnings closely and eliminate problems with potential security implications, such as signed / unsigned mismatch in memory operations, or use of uninitialized variables. Even if the weakness is rarely exploitable, a single failure may lead to the compromise of the entire system.
CAPEC-92: Forced Integer Overflow
This attack forces an integer variable to go out of range. The integer variable is often used as an offset such as size of memory allocation or similarly. The attacker would typically control the value of such variable and try to get it out of range. For instance the integer in question is incremented past the maximum possible value, it may wrap to become a very small, or negative number, therefore providing a very incorrect value which can lead to unexpected behavior. At worst the attacker can execute arbitrary code.