CVE-2026-95508 libslirp - Buffer Overflow

libslirp contains a heap-based buffer overflow caused by improper handling of DHCPv6 CLIENTID or TFTP blksize options with small interface MTU, letting attackers cause denial of service or remote code execution, exploit requires small MTU configuration.

CVSS base score 7.4 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.57% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Buffer Overflow
Impact
Denial Of Service, Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
Published
22 September 2026
Updated
15 October 2026
Weakness
CWE-787

Vendor fix

Update to the latest version of libslirp.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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