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CVE-2025-12899

net: icmp: Out of bound memory read

Published: Jan 30, 2026Updated: Feb 4, 2026 Sources: CVE List NVDCWE-843
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
0.3%
Top 78.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

Description

A flaw in Zephyr’s network stack allows an IPv4 packet containing ICMP type 128 to be misclassified as an ICMPv6 Echo Request. This results in an out-of-bounds memory read and creates a potential information-leak vulnerability in the networking subsystem.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:LI:NA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:LAvailability
Low
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Weaknesses

CWE-843

Affected Products

Zephyrzephyrproject-rtos
On-premOS
Operating Systems / rtos-embedded-os
zephyrproject-rtososs-projectOperating Systemsaka zephyr

Attack Graph

Products CVE Techniques Tactics

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Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-c2vg-hj83-c2vg
github.com

Timeline

Published
Jan 30, 2026
Last Updated
Feb 4, 2026

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