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CVE-2025-34522

32
FAUCET Score

CVE-2025-34522 is a critical heap-based buffer overflow vulnerability in Arcserve Unified Data Protection (UDP) versions prior to 10.2. This flaw allows an unauthenticated attacker to achieve remote code execution or application crashes by sending specially crafted input. With a CVSS score of 9.8 (CRITICAL), it presents a high risk due to its pre-authentication nature, low attack complexity, and potential for full system compromise without user interaction. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered some community discussion, indicating awareness. Organizations using affected UDP versions must upgrade to 10.2 or apply relevant patches immediately.

Impacted Technologies

VendorProductVersion(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 Data

CVSS version used by this source: 4.0

9.2CRITICAL

CVSS:4.0/AV:N/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

Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
HIGH
VS Integrity
HIGH
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.52%
Probability of exploitation in next 30 days
EPSS Percentile
41.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0052 is in the 20th percentile among its peer group of 36,835 CVEs.

Social Chatter

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.

Media 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

Remediation records are not available for this CVE.

References

support.arcserve.com / s/article/Important-Security-Bulletin-Must-read-for-all-Arcserve-UDP-customers-on-all-versions
Vendor Advisory