9.8
CVE-2021-27877
- EPSS 2.75%
- Published 01.03.2021 22:15:14
- Last modified 07.03.2025 14:57:32
- Source cve@mitre.org
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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.
Data is provided by the National Vulnerability Database (NVD)
Veritas ≫ Backup Exec Version < 21.2
07.04.2023: CISA Known Exploited Vulnerabilities (KEV) Catalog
Veritas Backup Exec Agent Improper Authentication Vulnerability
VulnerabilityVeritas Backup Exec (BE) Agent contains an improper authentication vulnerability that could allow an attacker unauthorized access to the BE Agent via SHA authentication scheme.
DescriptionApply updates per vendor instructions.
Required actions| Type | Source | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 2.75% | 0.855 |
| Source | Base Score | Exploit Score | Impact Score | Vector string |
|---|---|---|---|---|
| nvd@nist.gov | 9.8 | 3.9 | 5.9 |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
|
| nvd@nist.gov | 7.5 | 10 | 6.4 |
AV:N/AC:L/Au:N/C:P/I:P/A:P
|
| cve@mitre.org | 8.2 | 3.9 | 4.2 |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
|