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CVE-2021-27877
Critical
93.9
RPSRPS range: 0–105; KEV-listed vulnerabilities can receive an exploitation amplifier.
Description
An issue was discovered in Veritas Backup Exec before 21.2. It supports multiple authentication schemes: SHA authentication is one of these. This authentication scheme is no longer used in current versions of the product, but hadn't yet been disabled. An attacker could remotely exploit this scheme to gain unauthorized access to an Agent and execute privileged commands.
Source: NVD
Signals
- CVSS
- 8.2
- High · v3.1
- EPSS
- 64.91%
- Probability of exploitation in the next 30 days (FIRST)
- CISA KEV
- In CISA KEV since Apr 2023
- Fix commit
- No known fix commit
- Sources: MoreFixes, FreshFixes
- Weakness
- Not mapped
- Published
- 1 Mar 2021
- Last modified 3 Nov 2025
How to read these signals: RPS · EPSS · CISA KEV · Data sources
Get this score from the API
curl -H "Authorization: Bearer dsec_live_xxxxxxxx" \
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Data as of 7 Oct 2026, 05:16 UK time