These pages are published after PatchSiren validates generated defensive summaries against stored public CVE and source evidence.
CVE-2026-44963 is a critical vulnerability with a CVSS score of 9.4, allowing remote code execution (RCE) on a Backup Server by an authenticated domain user. The vulnerability was published on [cvePublishedAt](https://www.cve.org/CVERecord?id=CVE-2026-44963) and last modified on [cveModifiedAt](https://nvd.nist.gov/vuln/detail/CVE-2026-44963).
A critical remote code execution vulnerability in Veeam Service Provider Console was disclosed on May 28, 2026. The vulnerability carries a CVSS 4.0 score of 9.4, indicating severe impact potential with network attack vector, low attack complexity, and no required user interaction. The weakness has been classified as CWE-233 (Improper Handling of Parameters). Veeam has published a knowledge base article a [truncated]
A path traversal vulnerability in Veeam Backup & Replication allows authenticated users with the Backup Administrator role to write arbitrary files on Linux-based servers. The vulnerability stems from improper handling of absolute paths (CWE-36), enabling privileged file system manipulation. Published 2026-05-28 with CVSS 4.0 score 8.6 (HIGH). No known exploitation in the wild or ransomware campaign assoc [truncated]
A local privilege escalation vulnerability in Veeam Agent for Microsoft Windows was disclosed on May 28, 2026. The vulnerability is classified as CWE-532 (Insertion of Sensitive Information into Log File) and carries a CVSS 4.0 score of 7.3 (HIGH). The attack requires local access with low privileges and no user interaction, potentially allowing an attacker to gain high confidentiality, integrity, and ava [truncated]
CVE-2026-21708 is a critical remote code execution issue described as allowing a Backup Viewer to execute code as the postgres user. The supplied NVD metadata rates it 9.9/CRITICAL and lists a network-accessible, low-privilege attack with changed scope. Because the record points to Veeam advisories (KB4830 and KB4831), organizations using the affected Veeam environment should treat this as an immediate re [truncated]
CVE-2026-21672 is a high-severity local privilege escalation issue affecting Windows-based Veeam Backup & Replication servers. The supplied NVD data rates it 8.8 (HIGH) and points to vendor KB references for remediation guidance. Because the attack requires local access and low privileges, the main risk is post-compromise escalation on systems already reachable by an attacker or untrusted user.
CVE-2026-21671 is a critical remote code execution issue in Veeam Backup & Replication high availability (HA) deployments. According to the supplied NVD record, an authenticated user with the Backup Administrator role can trigger RCE, and the issue is rated CVSS 9.1.
CVE-2026-21670 is a high-severity Veeam issue that can let a low-privileged user extract saved SSH credentials. NVD maps the affected product to Veeam Backup & Replication and lists the vulnerable version range as 13.0.0.496 through 13.0.1.1071. Because the flaw exposes credentials, the main risk is unauthorized access to systems reachable with those SSH keys or passwords, especially where stored credenti [truncated]
CVE-2026-21669 is a critical remote code execution issue affecting Veeam Backup & Replication on the Backup Server. According to the NVD record, the vulnerable range includes versions 13.0.0.496 through before 13.0.1.2067, and the issue can be reached by an authenticated domain user. The CVSS vector indicates network attackability, low attack complexity, required low privileges, no user interaction, and h [truncated]
CVE-2026-21668 is a high-severity issue in Veeam Backup & Replication where an authenticated domain user may bypass restrictions and manipulate arbitrary files on a Backup Repository. NVD lists affected versions from 12.0.0.1402 through 12.3.2.4465. The vendor advisory referenced by NVD is available at Veeam KB4830.
CVE-2024-40711 is a deserialization vulnerability in Veeam Backup & Replication that CISA added to its Known Exploited Vulnerabilities catalog on 2024-10-17. CISA also marks it as having known ransomware campaign use. Because it is a KEV-listed issue, defenders should treat it as urgent and follow vendor mitigation guidance immediately, or discontinue use if mitigations are not available.
CVE-2023-27532 is a CISA Known Exploited Vulnerability affecting Veeam Backup & Replication Cloud Connect. CISA added it to the KEV catalog on 2023-08-22, marked it as known ransomware campaign use, and set a due date of 2023-09-12 for required action.
CVE-2022-26501 is a Veeam Backup & Replication remote code execution vulnerability that CISA added to its Known Exploited Vulnerabilities catalog on 2022-12-13. CISA also marked it as having known ransomware campaign use. In practice, that means organizations running Veeam Backup & Replication should treat this as a high-priority remediation item and follow vendor update guidance as soon as possible.
CVE-2022-26500 is a remote code execution vulnerability in Veeam Backup & Replication that CISA added to the Known Exploited Vulnerabilities catalog on 2022-12-13. CISA also marks it as having known ransomware campaign use, which makes prompt patching and validation especially important. The supplied corpus does not include exploit mechanics or affected-version details, so the safest action is to follow v [truncated]