Common Weakness Enumeration
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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-2026-7424 (GCVE-0-2026-7424)
Vulnerability from cvelistv5 – Published: 2026-04-29 18:51 – Updated: 2026-04-29 22:13
VLAI
Title
Integer Underflow in DHCPv6 Sub-Option Parser in FreeRTOS-Plus-TCP
Summary
Integer underflow in the DHCPv6 sub-option parser in FreeRTOS-Plus-TCP before V4.4.1 and V4.2.6 allows an adjacent network actor to corrupt the device's IPv6 address assignment, DNS configuration, and lease times, and to cause a denial of service (permanent IP task freeze requiring hardware reset) by sending a single crafted DHCPv6 packet.
The issue is present whenever DHCPv6 is enabled.
To mitigate this issue, users should upgrade to version V4.2.6 or V4.4.1 or newer.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/rel… | patch |
| https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/rel… | patch |
| https://aws.amazon.com/security/security-bulletin… | vendor-advisory |
| https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/sec… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| AWS | FreeRTOS-Plus-TCP |
Affected:
4.0.0 , < 4.2.6
(semver)
Affected: 4.3.0 , < 4.4.1 (semver) Unaffected: 4.2.6 Unaffected: 4.4.1 |
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CVE-2026-7736 (GCVE-0-2026-7736)
Vulnerability from cvelistv5 – Published: 2026-05-04 05:30 – Updated: 2026-05-04 10:37 X_Open Source
VLAI
Title
osrg GoBGP mrt.go parseRibEntry integer underflow
Summary
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Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/360911 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/360911/cti | signaturepermissions-required |
| https://vuldb.com/submit/807604 | third-party-advisory |
| https://github.com/osrg/gobgp/commit/76d911046344… | patch |
| https://github.com/osrg/gobgp/releases/tag/v4.4.0 | patch |
| https://github.com/osrg/gobgp/ | product |
Impacted products
Credits
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CVE-2026-8463 (GCVE-0-2026-8463)
Vulnerability from cvelistv5 – Published: 2026-05-13 12:40 – Updated: 2026-05-13 17:19
VLAI
Title
Crypt::Argon2 versions from 0.017 before 0.031 for Perl perform a heap out-of-bounds read in argon2_verify on empty encoded input
Summary
Crypt::Argon2 versions from 0.017 before 0.031 for Perl perform a heap out-of-bounds read in argon2_verify on empty encoded input.
The auto-detect form of argon2_verify passes encoded_len - 1 as the length argument to memchr without checking that encoded_len is non-zero. When the encoded string is empty, the size_t subtraction underflows to SIZE_MAX and memchr scans adjacent heap memory looking for a '$' separator byte.
A caller that invokes argon2_verify against a stored hash that may legitimately be empty (for example a placeholder row or a NULL column materialised as an empty string) reads out-of-bounds heap memory, which can crash the process or leak the position of an adjacent '$' byte into subsequent parsing.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
3 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| LEONT | Crypt::Argon2 |
Affected:
0.017 , < 0.031
(custom)
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No mitigation information available for this CWE.
No CAPEC attack patterns related to this CWE.