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CWE-191
Integer Underflow (Wrap or Wraparound)
The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.
CVE-2026-45469 (GCVE-0-2026-45469)
Vulnerability from cvelistv5 – Published: 2026-06-09 17:04 – Updated: 2026-07-08 23:22
VLAI
EPSS
VEX
Title
Microsoft Excel Remote Code Execution Vulnerability
Summary
Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
9 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft 365 Apps for Enterprise |
Affected:
16.0.1 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Excel 2016 |
Affected:
16.0.0.0 , < 16.0.5556.1001
(custom)
|
|
| Microsoft | Microsoft Office 2019 |
Affected:
19.0.0 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Office 365 for Mac |
Affected:
1.0.0 , < 16.110.26061317
(custom)
|
|
| Microsoft | Microsoft Office LTSC 2021 |
Affected:
16.0.1 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Office LTSC 2024 |
Affected:
16.0.0 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Office LTSC for Mac 2021 |
Affected:
16.0.1 , < 16.110.26061317
(custom)
|
|
| Microsoft | Microsoft Office LTSC for Mac 2024 |
Affected:
16.0.0 , < 16.110.26061317
(custom)
|
|
| Microsoft | Office Online Server |
Affected:
16.0.0.0 , < 16.0.10417.20137
(custom)
|
Date Public
2026-06-09 14:00
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CVE-2026-47222 (GCVE-0-2026-47222)
Vulnerability from cvelistv5 – Published: 2026-06-12 16:56 – Updated: 2026-06-12 17:16
VLAI
EPSS
VEX
Title
NanaZip: Heap out-of-bounds read in NanaZip AVB property descriptor parser via unsigned integer underflow
Summary
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Severity
5.4 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/M2Team/NanaZip/security/adviso… | x_refsource_CONFIRM |
Impacted products
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CVE-2026-49494 (GCVE-0-2026-49494)
Vulnerability from cvelistv5 – Published: 2026-06-07 12:08 – Updated: 2026-06-23 14:07
VLAI
EPSS
VEX
Title
Xcitium Client Security / Comodo Internet Security Remote Denial of Service
Summary
Xcitium Client Security (XCS) before 13.8.2.10019 and Comodo Internet Security (CIS) through 12.3.4.8162 (fix expected by 2026 Q3) contain an integer underflow vulnerability in the firewall driver Inspect.sys that allows remote unauthenticated attackers to crash the system by sending a crafted IPv6 packet with a declared payload length smaller than the sum of its extension-header lengths. The unsigned 64-bit payload-length value underflows to a near-maximal integer, triggering an out-of-bounds read and oversized memcpy in the Windows kernel at DISPATCH_LEVEL, resulting in a blue screen of death even on hosts with all ports blocked.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://malwaretech.com/2026/06/exploiting-a-remo… | technical-descriptionexploit |
| https://github.com/MalwareTech/ComoDoS | exploit |
| https://updates.xcitium.com/#note11312 | release-notespatch |
| https://www.vulncheck.com/advisories/xcitium-clie… | third-party-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Xcitium (formerly Comodo Security Solutions) | Comodo Internet Security |
Affected:
0 , ≤ 12.3.4.8162
(custom)
|
|
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Affected:
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(custom)
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Date Public
2026-06-03 00:00
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CVE-2026-50593 (GCVE-0-2026-50593)
Vulnerability from cvelistv5 – Published: 2026-06-05 02:14 – Updated: 2026-06-05 18:22
VLAI
EPSS
VEX
Summary
Graphite before 1.3.15 has an integer underflow and resultant out-of-bounds write via Graphite actions, because slotat does not ensure that an offset is within the allowed slot-map range.
Severity
7.3 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Graphite project | Graphite |
Affected:
0 , < 1.3.15
(semver)
|
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CVE-2026-5188 (GCVE-0-2026-5188)
Vulnerability from cvelistv5 – Published: 2026-04-10 03:24 – Updated: 2026-04-10 13:41
VLAI
EPSS
VEX
Title
Integer underflow in X.509 SAN parsing in wolfSSL
Summary
An integer underflow issue exists in wolfSSL when parsing the Subject Alternative Name (SAN) extension of X.509 certificates. A malformed certificate can specify an entry length larger than the enclosing sequence, causing the internal length counter to wrap during parsing. This results in incorrect handling of certificate data. The issue is limited to configurations using the original ASN.1 parsing implementation which is off by default.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-191 - Integer underflow
Assigner
References
1 reference
Date Public
2026-03-31 00:02
Credits
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CVE-2026-54412 (GCVE-0-2026-54412)
Vulnerability from cvelistv5 – Published: 2026-06-14 17:26 – Updated: 2026-06-15 17:01
VLAI
EPSS
VEX
Summary
LiamBindle MQTT-C through version 1.1.6 contains a heap-based out-of-bounds read and integer underflow in the mqtt_unpack_publish_response() function in src/mqtt.c that allows a remote unauthenticated attacker controlling an MQTT broker - or able to inject MQTT traffic into an unencrypted session - to crash a subscribed MQTT-C client and potentially disclose adjacent heap memory by sending a single crafted PUBLISH packet. The function validates only that the fixed-header remaining_length is at least 4, then reads the 16-bit topic_name_size field from the broker-controlled packet and advances the parse pointer by that value without verifying that topic_name_size plus the surrounding overhead fits within remaining_length; it subsequently computes application_message_size as remaining_length - topic_name_size - 2 (QoS 0) or - 4 (QoS greater than 0) in unsigned arithmetic, producing an integer underflow that is then passed to memmove(). A PUBLISH packet with topic_name_size = 0xFFFF and remaining_length = 7 advances the parse pointer 65535 bytes past the receive buffer (out-of-bounds read) and causes an application_message_size near 2^32, crashing the process when the resulting memmove() is executed.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/LiamBindle/MQTT-C | product |
| https://github.com/LiamBindle/MQTT-C/blob/v1.1.6/… | product |
| https://cwe.mitre.org/data/definitions/125.html | technical-description |
| https://cwe.mitre.org/data/definitions/191.html | technical-description |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| LiamBindle | MQTT-C |
Affected:
0 , ≤ 1.1.6
(semver)
|
Credits
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CVE-2026-54413 (GCVE-0-2026-54413)
Vulnerability from cvelistv5 – Published: 2026-06-14 17:38 – Updated: 2026-06-15 15:09
VLAI
EPSS
VEX
Summary
driftregion iso14229 through 0.9.0 contains an integer underflow and downstream out-of-bounds read in the Handle_0x27_SecurityAccess() function in iso14229.c that allows a remote unauthenticated attacker to crash a UDS server and potentially read memory past the receive buffer by sending a single-byte 0x27 SecurityAccess request that follows any earlier well-formed 0x27 message. The handler reads the SecurityAccess subFunction from recv_buf[1] without first checking that recv_len is at least 2, then computes the key-data length as the unsigned subtraction (uint16_t)(recv_len - UDS_0X27_REQ_BASE_LEN); when recv_len equals 1 the result underflows to 65535 and is passed as args.len to the application's SecAccessValidateKey or SecAccessRequestSeed callback, which typically iterates or copies that many bytes from the 4-KB receive buffer. Every other UDS sub-function handler in the library (0x10, 0x11, 0x14, 0x19, 0x22, 0x23, 0x28, and others) performs an explicit recv_len lower-bound check before indexing; Handle_0x27_SecurityAccess is the sole outlier. The vulnerable handler reaches over CAN bus, OBD-II, ISO-TP, and DoIP transports and is exposed in the default diagnostic session without prior authentication; deployments on automotive ECUs, industrial controllers, and IoT devices that ship iso14229 as their UDS server are affected.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/driftregion/iso14229 | product |
| https://github.com/driftregion/iso14229/blob/main… | product |
| https://cwe.mitre.org/data/definitions/191.html | technical-description |
| https://cwe.mitre.org/data/definitions/125.html | technical-description |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| driftregion | iso14229 |
Affected:
0 , ≤ 0.9.0
(semver)
|
Credits
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CVE-2026-55490 (GCVE-0-2026-55490)
Vulnerability from cvelistv5 – Published: 2026-07-07 21:08 – Updated: 2026-07-08 13:52
VLAI
EPSS
VEX
Title
OpenWrt: EAD Integer Underflow → Pre-Auth Denial of Service
Summary
OpenWrt is a Linux operating system targeting embedded devices. Before v25.12.5, an integer underflow in handle_send_a() of the Emergency Access Daemon allows any unauthenticated attacker on the local network to crash the daemon by sending a single crafted UDP packet. The message length underflows before a bounds check and is then passed to memcpy as a very large size. This issue is fixed v25.12.5.
Severity
6.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/openwrt/openwrt/security/advis… | x_refsource_CONFIRM |
| https://github.com/openwrt/openwrt/commit/63c0767… | x_refsource_MISC |
| https://github.com/openwrt/openwrt/releases/tag/v… | x_refsource_MISC |
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CVE-2026-5720 (GCVE-0-2026-5720)
Vulnerability from cvelistv5 – Published: 2026-04-17 21:39 – Updated: 2026-05-04 21:40
VLAI
EPSS
VEX
Title
miniupnpd Integer Underflow SOAPAction Header Parsing
Summary
miniupnpd contains an integer underflow vulnerability in SOAPAction header parsing that allows remote attackers to cause a denial of service or information disclosure by sending a malformed SOAPAction header with a single quote. Attackers can trigger an out-of-bounds memory read by exploiting improper length validation in ParseHttpHeaders(), where the parsed length underflows to a large unsigned value when passed to memchr(), causing the process to scan memory far beyond the allocated HTTP request buffer.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/miniupnp/miniupnp/ | product |
| https://github.com/miniupnp/miniupnp/commit/f56bd… | patch |
| https://www.vulncheck.com/advisories/miniupnpd-in… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| miniupnp project | miniupnpd |
Affected:
0 , < 2.3.10
(semver)
|
Date Public
2026-04-03 00:00
Credits
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CVE-2026-57452 (GCVE-0-2026-57452)
Vulnerability from cvelistv5 – Published: 2026-06-25 15:27 – Updated: 2026-06-25 15:47
VLAI
EPSS
VEX
Title
Vim: Out-of-bounds Read with libsodium-encrypted Files
Summary
Vim is an open source, command line text editor. Prior to 9.2.0671, when Vim opens a file encrypted with the VimCrypt~04! or VimCrypt~05!
method (xchacha20poly1305, requires the +sodium feature) whose body is shorter than a single libsodium secretstream header, an unsigned length calculation underflows and a subsequent decryption call reads far past the end of the input buffer, crashing Vim. This vulnerability is fixed in 9.2.0671.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/vim/vim/security/advisories/GH… | x_refsource_CONFIRM |
| https://github.com/vim/vim/commit/c8777cec25dcfae… | x_refsource_MISC |
| https://github.com/vim/vim/releases/tag/v9.2.0671 | x_refsource_MISC |
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"containers": {
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"metrics": [
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"other": {
"content": {
"id": "CVE-2026-57452",
"options": [
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{
"Technical Impact": "partial"
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"role": "CISA Coordinator",
"timestamp": "2026-06-25T15:47:10.061512Z",
"version": "2.0.3"
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"cna": {
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}
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"metrics": [
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"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"version": "3.1"
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"discovery": "UNKNOWN"
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"title": "Vim: Out-of-bounds Read with libsodium-encrypted Files"
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"dateReserved": "2026-06-24T13:21:20.730Z",
"dateUpdated": "2026-06-25T15:47:18.346Z",
"state": "PUBLISHED"
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"dataVersion": "5.2"
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No mitigation information available for this CWE.
No CAPEC attack patterns related to this CWE.