AUGUST 4, 2026
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Case File

CVE-2026-22321

MEDIUM · CVSS 5.3 EPSS 0.37%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2026-03-18 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.3. Exploitation may require the attacker to be authenticated.

CVE
CVE-2026-22321
Severity
MEDIUM
CVSS
5.3
EPSS
0.37%

Original NVD Description

A stack-based buffer overflow in the device's Telnet/SSH CLI login routine occurs when a unauthenticated attacker send an oversized or unexpected username input. An overflow condition crashes the thread handling the login attempt, forcing the session to close. Because other CLI sessions remain unaffected, the impact is limited to a low‑severity availability disruption.