5.3

CVE-2025-11618: amazon freertos-plus-tcp NULL Pointer Dereference

CVSS: 5.3v4.0MediumAnalyzed
Published 10-10-2025Last modified 10-10-2025
Open JSON

Vulnerability summary

CVE-2025-11618 is a medium (CVSS 5.3) NULL Pointer Dereference vulnerability in amazon freertos-plus-tcp. EPSS estimates a 0.34% chance of exploitation in the next 30 days, higher than 25.6% of scored vulnerabilities.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v4.0 (CVE.org)
EPSS score
0.34%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 10-10-2025
    PublishedVulnerability first disclosed.
  2. 10-10-2025
    Last modifiedVulnerability information updated.

Description

A missing validation check in FreeRTOS-Plus-TCP's UDP/IPv6 packet processing code can lead to an invalid pointer dereference when receiving a UDP/IPv6 packet with an incorrect IP version field in the packet header. This issue only affects applications using IPv6. We recommend upgrading to the latest version and ensure any forked or derivative code is patched to incorporate the new fixes.

CVSS metrics

4 scores · 2 sources · 2 versions

EPSS trend

Probability

0.34%

Chance of exploitation in the next 30 days

Percentile

26%

Versus all other CVEs

30-day change

0.00 pp

From 0.34% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.34%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Amazon1 product
Aws1 product

2 vendors · 2 products

References

3 links