AUGUST 4, 2026
Live Feed
Back to database
Case File

CVE-2021-45098

HIGH · CVSS 7.5 EPSS 1.82% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-12-16 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

Public Exploit Signal

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

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

CVE
CVE-2021-45098
Severity
HIGH
CVSS
7.5
EPSS
1.82%

Original NVD Description

An issue was discovered in Suricata before 6.0.4. It is possible to bypass/evade any HTTP-based signature by faking an RST TCP packet with random TCP options of the md5header from the client side. After the three-way handshake, it's possible to inject an RST ACK with a random TCP md5header option. Then, the client can send an HTTP GET request with a forbidden URL. The server will ignore the RST ACK and send the response HTTP packet for the client's request. These packets will not trigger a Suricata reject action.