CVE-2025-34520 is a critical authentication bypass vulnerability affecting Arcserve Unified Data Protection (UDP) versions prior to 10.2. This flaw allows unauthenticated attackers to bypass login mechanisms and gain unauthorized access to administrator-level features by manipulating request parameters or exploiting a logic flaw. With a CVSS score of 9.8 (CRITICAL), it presents a severe risk due to its network-based attack vector, low attack complexity, and complete compromise of confidentiality, integrity, and availability. Currently, there is no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 7.0CPE matchmatch criteria | cpe:2.3:a:arcserve:udp:*:*:*:*:*:*:*:* | ||
>= 8.0, < 10.2CPE matchmatch criteria | cpe:2.3:a:arcserve:udp:*:*:*:*:*:*:*:* | ||
7.0CPE matchmatch criteria | cpe:2.3:a:arcserve:udp:7.0:-:*:*:*:*:*:* | ||
7.0CPE matchmatch criteria | cpe:2.3:a:arcserve:udp:7.0:update_1:*:*:*:*:*:* | ||
7.0CPE matchmatch criteria | cpe:2.3:a:arcserve:udp:7.0:update_2:*:*:*:*:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.