CVE-2021-27876

unknown KEV

Published 2023-04-07 · Modified 2023-04-07

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

2.5

Description

Veritas Backup Exec (BE) Agent contains a file access vulnerability that could allow an attacker to specially craft input parameters on a data management protocol command to access files on the BE Agent machine.

CISA KEV

Vendor: Veritas
Product: Backup Exec Agent
Due date: 2023-04-28

Predictions

Exploit likelihood

99%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Metasploit modules

exploit_multi/veritas/beagent_sha_auth_rce rank 600

Veritas Backup Exec Agent Remote Code Execution

Source fetch failed: fetch_error — view the original via the link above.

References

https://www.veritas.com/support/en_US/security/VTS21-001; https://nvd.nist.gov/vuln/detail/CVE-2021-27876

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.