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Case File

CVE-2017-18017

CRITICAL · CVSS 9.8 EPSS 52.84% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2018-01-03 · Last synced 2026-08-04

Field Assessment

AI analysis pending.

Exhibit — Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links
github.com ↗

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2017-18017
Severity
CRITICAL
CVSS
9.8
EPSS
52.84%
Linux

Original Filing — NVD Description

The tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c in the Linux kernel before 4.11, and 4.9.x before 4.9.36, allows remote attackers to cause a denial of service (use-after-free and memory corruption) or possibly have unspecified other impact by leveraging the presence of xt_TCPMSS in an iptables action.