CVE-2026-20080

Published Jan 21, 2026

Last updated 2 months ago

CVSS medium 5.3
Port (22)

Overview

Description
A vulnerability in the SSH service of Cisco IEC6400 Wireless Backhaul Edge Compute Software could allow an unauthenticated, remote attacker to cause the SSH service to stop responding. This vulnerability exists because the SSH service lacks effective flood protection. An attacker could exploit this vulnerability by initiating a denial of service (DoS) attack against the SSH port. A successful exploit could allow the attacker to cause the SSH service to be unresponsive during the period of the DoS attack. All other operations remain stable during the attack.
Source
psirt@cisco.com
NVD status
Awaiting Analysis

Risk scores

CVSS 3.1

Type
Primary
Base score
5.3
Impact score
1.4
Exploitability score
3.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Severity
MEDIUM

Weaknesses

psirt@cisco.com
CWE-400

Social media

Hype score
Not currently trending

Related CVEs

  1. An attacker may exploit the use of outdated and weak MAC algorithms in the device’s SSH service to potentially compromise the integrity of the SSH session, allowing manipulation of transmitted data if the attacker can interact with the network traffic.•CVE-2026-1627
  2. BeyondTrust Remote Support (RS) and Privileged Remote Access (PRA) OS Command Injection Vulnerability•CVE-2026-1731
  3. SSH Hostkey misconfiguration vulnerability in TP-Link Archer AX53 v1.0 (tmpserver modules) allows attackers to obtain device credentials through a specially crafted man‑in‑the‑middle (MITM) attack. This could enable unauthorized access if captured credentials are reused.This issue affects Archer AX53 v1.0: through 1.3.1 Build 20241120.•CVE-2025-62501
  4. Soft Serve is a self-hostable Git server for the command line. Versions 0.11.2 and below have a critical authentication bypass vulnerability that allows an attacker to impersonate any user (including admin) by "offering" the victim's public key during the SSH handshake before authenticating with their own valid key. This occurs because the user identity is stored in the session context during the "offer" phase and is not cleared if that specific authentication attempt fails. This issue has been fixed in version 0.11.3.•CVE-2026-24058
  5. A vulnerability in the SSH restricted shell interface of the network management services allows improper access control for authenticated read-only users. If successfully exploited, this vulnerability could allow an attacker with read-only privileges to gain administrator access on the affected system.•CVE-2025-37155

References

Sources include official advisories and independent security research.