CVE-2025-34522CWE-122

CVE-2025-34522

Critical · published August 28, 2025

CVSS v3.1
9.8
EPSS
1%
Percentile
45.6
In the wild
Unconfirmed
What it is

🚨 A heap-based buffer overflow in Arcserve UDP can lead to full remote code execution without authentication! 😱 Think of this vulnerability like a delivery driver accepting packages without checking their contents — if they don’t inspect what’s inside, they could end up with something dangerous that crashes everything! 📦💥 An attacker could exploit this flaw to overwrite critical heap memory, potentially causing the application to crash or even letting them execute arbitrary code. This means they could take control of the system, leading to catastrophic data breaches or service disruptions! 🔥

Put simply

Think of this vulnerability like a delivery driver accepting packages without checking their contents — if they don’t inspect what’s inside, they could end up with something dangerous that crashes everything! 📦💥 This vulnerability occurs due to improper bounds checking in the input parsing logic of Arcserve Unified Data Protection (UDP), allowing attackers to manipulate memory without any authentication steps.

What to do

An attacker could exploit this flaw to overwrite critical heap memory, potentially causing the application to crash or even letting them execute arbitrary code. This means they could take control of the system, leading to catastrophic data breaches or service disruptions! 🔥 To protect yourself, immediately upgrade to Arcserve UDP version 10.2, which includes the necessary patches. If you’re running versions 8.0 through 10.1, apply the patches or upgrade to 10.2 as well. For versions 7.x and earlier, an upgrade to 10.2 is essential, as they are no longer supported. 🛡️ You've got this! By taking action, you can secure your system and keep everything running smoothly. 🚀

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00556 · 45.6th percentile
Weakness
CWE-122 · Heap-based Buffer Overflow
Published
2025-08-28T02:15Z
Affected products (5)
ProductVersionsFixed in
arcserve/udp< 7.07.0
arcserve/udp≥ 8.0, < 10.210.2
arcserve/udpall versions—
arcserve/udpall versions—
arcserve/udpall versions—
References (1)
EPSS history
Timeline
  • 27 AUG 21:19Z
    Arcserve UDP < 10.2 Pre-Authentication Heap Overflow
    cvelistv5