An issue was discovered in Veritas Backup Exec before 21.2. The communication between a client and an Agent requires successful authentication, which is typically completed over a secure TLS communication. However, due to a vulnerability in the SHA Authentication scheme, an attacker is able to gain unauthorized access and complete the authentication process. Subsequently, the client can execute data management protocol commands on the authenticated connection. By using crafted input parameters in one of these commands, an attacker can access an arbitrary file on the system using System privileges.
Advisories
Source ID Title
EUVD EUVD EUVD-2021-14614 An issue was discovered in Veritas Backup Exec before 21.2. The communication between a client and an Agent requires successful authentication, which is typically completed over a secure TLS communication. However, due to a vulnerability in the SHA Authentication scheme, an attacker is able to gain unauthorized access and complete the authentication process. Subsequently, the client can execute data management protocol commands on the authenticated connection. By using crafted input parameters in one of these commands, an attacker can access an arbitrary file on the system using System privileges.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 22 Oct 2025 00:15:00 +0000


Tue, 21 Oct 2025 20:30:00 +0000


Tue, 21 Oct 2025 19:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-287 NVD-CWE-noinfo
References

Mon, 03 Feb 2025 17:15:00 +0000

Type Values Removed Values Added
Metrics kev

{'dateAdded': '2023-04-07'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'active', 'Technical Impact': 'total'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2025-10-21T23:25:53.626Z

Reserved: 2021-03-01T00:00:00.000Z

Link: CVE-2021-27876

cve-icon Vulnrichment

Updated: 2024-08-03T21:33:17.306Z

cve-icon NVD

Status : Modified

Published: 2021-03-01T22:15:14.350

Modified: 2025-10-22T00:17:30.033

Link: CVE-2021-27876

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.