Is there a public exploit for CVE-2026-120830?

No public exploit for CVE-2026-120830 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-120830?

CVE-2026-120830 scores CVSS 7.4 (v3.1), rated high.

7.4 High

A flaw was found in libslirp in icmpforwarderror().

CVE-2026-120830

A flaw was found in libslirp in icmpforwarderror(). When building an ICMP error response, the length of the quoted original IPv4 packet was taken from the IP header without clamping it to the actual buffer length. A truncated or malformed packet could cause an out-of-bounds heap read, leaking host memory into the ICMP error packet returned to a guest or container.

Assessment

CVSS: 7.4 (v3.1)
Severity: High
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 3 November 2026
Last updated: 3 November 2026
Assigner: redhat

CVSS vectorCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

At the source

EUVD (ENISA)

References

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