CVE-2025-34520: CWE-288 Authentication Bypass Using an Alternate Path or Channel in Arcserve Unified Data Protection (UDP)
An authentication bypass vulnerability in Arcserve Unified Data Protection (UDP) allows unauthenticated attackers to gain unauthorized access to protected functionality or user accounts. By manipulating specific request parameters or exploiting a logic flaw, an attacker can bypass login mechanisms without valid credentials and access administrator-level features. This vulnerability affects all UDP versions prior to 10.2. UDP 10.2 includes the necessary patches and requires no action. Versions 8.0 through 10.1 are supported and require either patch application or upgrade to 10.2. Versions 7.x and earlier are unsupported or out of maintenance and must be upgraded to 10.2 to remediate the issue.
AI Analysis
Technical Summary
This vulnerability (CVE-2025-34520) in Arcserve UDP enables attackers to bypass authentication mechanisms without valid credentials by exploiting an alternate path or channel, classified under CWE-288. It affects all versions before 10.2, allowing unauthorized access to administrator-level features. UDP 10.2 contains the necessary patches to address this issue. The CVSS 4.0 score is 7.7 (high severity), indicating a significant risk if exploited. No known exploits are reported in the wild as of the publication date.
Potential Impact
Successful exploitation allows unauthenticated attackers to gain unauthorized access to protected functionality or user accounts, including administrator-level features, potentially compromising the confidentiality and integrity of the system. This could lead to unauthorized data access or administrative control over the UDP environment.
Mitigation Recommendations
A fix is available in Arcserve UDP version 10.2, which includes the necessary patches to remediate this vulnerability. Users running versions 8.0 through 10.1 should apply the patch or upgrade to version 10.2. Versions 7.x and earlier, which are unsupported, must be upgraded to 10.2 to address the issue. No additional mitigation steps are indicated by the vendor advisory.
CVE-2025-34520: CWE-288 Authentication Bypass Using an Alternate Path or Channel in Arcserve Unified Data Protection (UDP)
Description
An authentication bypass vulnerability in Arcserve Unified Data Protection (UDP) allows unauthenticated attackers to gain unauthorized access to protected functionality or user accounts. By manipulating specific request parameters or exploiting a logic flaw, an attacker can bypass login mechanisms without valid credentials and access administrator-level features. This vulnerability affects all UDP versions prior to 10.2. UDP 10.2 includes the necessary patches and requires no action. Versions 8.0 through 10.1 are supported and require either patch application or upgrade to 10.2. Versions 7.x and earlier are unsupported or out of maintenance and must be upgraded to 10.2 to remediate the issue.
CVSS v4.0
Score 7.7high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2025-34520) in Arcserve UDP enables attackers to bypass authentication mechanisms without valid credentials by exploiting an alternate path or channel, classified under CWE-288. It affects all versions before 10.2, allowing unauthorized access to administrator-level features. UDP 10.2 contains the necessary patches to address this issue. The CVSS 4.0 score is 7.7 (high severity), indicating a significant risk if exploited. No known exploits are reported in the wild as of the publication date.
Potential Impact
Successful exploitation allows unauthenticated attackers to gain unauthorized access to protected functionality or user accounts, including administrator-level features, potentially compromising the confidentiality and integrity of the system. This could lead to unauthorized data access or administrative control over the UDP environment.
Mitigation Recommendations
A fix is available in Arcserve UDP version 10.2, which includes the necessary patches to remediate this vulnerability. Users running versions 8.0 through 10.1 should apply the patch or upgrade to version 10.2. Versions 7.x and earlier, which are unsupported, must be upgraded to 10.2 to address the issue. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2025-04-15T19:15:22.612Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 68af7981ad5a09ad006645bc
Added to database: 08/27/2025, 21:32:49 UTC
Last enriched: 05/21/2026, 12:10:14 UTC
Last updated: 09/10/2026, 19:36:50 UTC
Views: 216
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