CVE-2021-27878 · Severity: critical · CVSS 8.8 · Exploited in the wild · Published 2023-04-07
Veritas Backup Exec Agent contains a vulnerability in its SHA Authentication scheme that allows an attacker to bypass authentication. Once authenticated, an attacker can use data management protocol commands to execute arbitrary commands with system privileges on the target machine.
Yes. CVE-2021-27878 is known to be exploited in the wild, first recorded on 7 April 2023. Treat it as urgent.
How severe is CVE-2021-27878?
Critical severity, with a CVSS score of 8.8, published 7 April 2023.
Which products and versions are affected?
Veritas Backup Exec Agent before 21.2.
Is there a fix for CVE-2021-27878?
A patch was published on 2021-03-08: NIST initial analysis and vendor advisory reference Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2021-27878 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2021-27878?
Check whether you run Veritas Backup Exec Agent. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Affected products
Veritas Backup Exec Agent before 21.2
Timeline
2021-03-01: disclosed: NVD Published Date
2021-03-08: patched: NIST initial analysis and vendor advisory reference
2023-04-07: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
2023-04-07: exploited: Reported as exploited in the wild per CISA KEV entry