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Case File

CVE-2019-11478

MEDIUM · CVSS 5.3 EPSS 94.69% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2019-06-19 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.3. It affects Linux, F5. Public exploit code or proof-of-concept references have been detected in its references. Its EPSS score suggests a 94.7% probability of exploitation in the next 30 days. It may be remotely exploitable. It may lead to a denial-of-service condition.

Public Exploit Signal

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

GitHub PoC Links

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

CVE
CVE-2019-11478
Severity
MEDIUM
CVSS
5.3
EPSS
94.69%
Linux F5

Original NVD Description

Jonathan Looney discovered that the TCP retransmission queue implementation in tcp_fragment in the Linux kernel could be fragmented when handling certain TCP Selective Acknowledgment (SACK) sequences. A remote attacker could use this to cause a denial of service. This has been fixed in stable kernel releases 4.4.182, 4.9.182, 4.14.127, 4.19.52, 5.1.11, and is fixed in commit f070ef2ac66716357066b683fb0baf55f8191a2e.

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