CVE-2025-21117 Auth bypass in Avamar
A low-privileged local attacker can reuse access tokens in Dell Avamar to fully impersonate users, requiring vendor patches for mitigation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-21117?
CVE-2025-21117 is a medium-severity authentication bypass vulnerability in Dell Avamar, published on 5 Feb 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Dell Avamar, version 19.4 or later, contains an access token reuse vulnerability in the AUI. A low privileged local attacker could potentially exploit this vulnerability, leading to fully impersonating the user.
Weakness: CWE-672
Which versions are affected by CVE-2025-21117?
It affects 1 product.
Products include Dell Avamar Server.
How do I fix CVE-2025-21117?
No fix has been published for CVE-2025-21117 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2025-21117 being exploited?
There is no known exploitation of CVE-2025-21117 in the wild and no public exploit code.
Other vulnerabilities in Dell Avamar
Sources
Also known as GHSA-h34r-pgxj-xwh9.