CVE-2025-11617 json
Buffer Over-read when receiving IPv6 packets with incorrect payload length in FreeRTOS-Plus-TCP
published 2025-10-10 12 mo ago modified 2026-11-05 3 d ago also EUVD-2025-33753
- cvss
- 5.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 24%
- public exploits
- 0
- none known
Summary
A missing validation check in FreeRTOS-Plus-TCP's IPv6 packet processing code can lead to an out-of-bounds read when receiving a IPv6 packet with incorrect payload lengths in the packet header. This issue only affects applications using IPv6.
We recommend users upgrade to the latest version and ensure any forked or derivative code is patched to incorporate the new fixes.
Patch / fix
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 12 mo ago
Exploit prediction
0.31% chance of exploitation in the next 30 days, higher than 24% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 5.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N |
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L |
| CNA | 4.0 | 5.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- AWS FreeRTOS-Plus-TCP
Classification
- Weakness
-
- CWE-126 Buffer Over-read
References
-
github.com
/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.3.4
patch, product, release-notes
-
aws.amazon.com
/security/security-bulletins/AWS-2025-023/
vendor-advisory
-
github.com
/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-wmjr-wm93-cvv2
third-party-advisory, vendor-advisory
Sources
- CVE List CVE-2025-11617
- NVD CVE-2025-11617
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