CVE-2026-22321 — Stack-Based Buffer Overflow in CLI Login Username Handling over CLI
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 con…
Published: 2026-03-18 · CVSS: 5.3 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7