Is CVE-2022-26503 actively exploited?

No active exploitation of CVE-2022-26503 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2022-26503 be exploited remotely?

No. CVE-2022-26503 requires local access to exploit.

What is the CVSS score of CVE-2022-26503?

CVE-2022-26503 has a CVSS score of 7.8 (HIGH).

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HIGH

CVE-2022-26503

CWE-502Published: March 17, 2022· Updated: Jun 17, 2026

7.8

CVSS v3.1

Official Description

Deserialization of untrusted data in Veeam Agent for Windows 2.0, 2.1, 2.2, 3.0.2, 4.x, and 5.x allows local users to run arbitrary code with local system privileges.

NVD Source

Technical Analysis

CVE-2022-26503 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

From a weakness classification perspective (CWE-502): Insecure deserialization vulnerabilities allow attackers to inject malicious objects during deserialization, potentially enabling remote code execution.