CVE-2026-120830
HIGH
MEDIUM
Priority: 0.02
BB Relevance:
60/100
Published: 2026-11-03
Modified: 2026-11-04
First seen: 2026-11-03
Status: active
Attack Surface
Adjacent
Low Complexity
No Auth
No Interaction
Conf. Impact
Scope Change
CVSS Vector Breakdown
AV:
Adjacent
AC:
Low
PR:
None
UI:
None
S:
Changed
C:
High
I:
None
A:
None
Description
A flaw was found in libslirp in icmp_forward_error(). 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.