CVE-2025-12899Disclosure

LOWCVSS 6.5 · MEDIUM

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD 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.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-843

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 2 mentions across 1 observed day

What's happening

  • Technical details provided in 2 signals
  • Disclosure: 1 classified signal
  • General: 1 classified signal
  • 2 total mentions across 1 day

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-01-30: 2Technical Details · 2026-01-30: 201-30
Signal classification2 categories
Disclosure
150.0%
General
150.0%
Referenced assets3 URLs
Full discourse2 posts
  • CVE@CVEnew
    Disclosure

    CVE-2025-12899 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… https://www.cve.org/CVERecord?id=CVE-2025-12899

    Post summary

    The post announces CVE-2025-12899, detailing a flaw in Zephyr’s network stack where an IPv4 ICMP packet is misclassified as an ICMPv6 Echo Request, causing an out‑of‑bounds memory issue.

    01000307
    56.5K followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    General

    CVE-2025-12899 IPv4 ICMP Packet Misclassification Leads to Memory Inform... https://vulmon.com/vulnerabilitydetails?qid=CVE-2025-12899 Don't wait vulnerability scanning results: https://alerts.vulmon.com/?utm_source=twitter&utm_medium=social&utm_campaign=2102281&utm_content=2

    Post summary

    The tweet merely announces CVE‑2025‑12899 with a headline and links, offering limited technical detail and no actionable information on PoC, exploitation, or mitigation.

    0000072
    4.0K followersView on X

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