How severe is CVE-2025-11616?

CVE-2025-11616 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability low.

Is CVE-2025-11616 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-11616?

CVE-2025-11616 affects Amazon Freertos-plus-tcp. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-11616?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-11616 have an EU (EUVD) identifier?

Yes. CVE-2025-11616 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-33754.

When was CVE-2025-11616 published?

CVE-2025-11616 was published on 2025-10-10 and last updated on 2026-06-17.

CVE-2025-11616

CVE-2025-11616 is a medium-severity vulnerability in Amazon Freertos-plus-tcp with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-126.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v4: 5.3
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-33754
Weakness: CWE-126
Affected product: Amazon Freertos-plus-tcp
Published: 2025-10-10
Last modified: 2026-06-17

Description

A missing validation check in FreeRTOS-Plus-TCP's ICMPv6 packet processing code can lead to an out-of-bounds read when receiving ICMPv6 packets of certain message types which are smaller than the expected size. These issues only affect applications using IPv6. Users should upgrade to the latest version and ensure any forked or derivative code is patched to incorporate the new fixes.

Frequently asked questions

What is CVE-2025-11616?: A missing validation check in FreeRTOS-Plus-TCP's ICMPv6 packet processing code can lead to an out-of-bounds read when receiving ICMPv6 packets of certain message types which are smaller than the expected size. These issues only affect applications using IPv6. Users should upgrade to the latest version and ensure any forked or derivative code is patched to incorporate the new fixes.
How severe is CVE-2025-11616?: CVE-2025-11616 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability low.
Is CVE-2025-11616 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-11616?: CVE-2025-11616 affects Amazon Freertos-plus-tcp. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-11616?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-11616 have an EU (EUVD) identifier?: Yes. CVE-2025-11616 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-33754.
When was CVE-2025-11616 published?: CVE-2025-11616 was published on 2025-10-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:amazon:freertos-plus-tcp:*:*:*:*:*:*:*:*

More vulnerabilities in Amazon Freertos-plus-tcp

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