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CVE-2025-34523— Arcserve UDP < 10.2 Pre-Authentication Heap Overflow

Quick assessment

Affected
Arcserve Unified Data Protection (UDP)
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Arcserve Unified Data Protection是Arcserve公司的一体化数据和勒索软件保护解决方案。 Arcserve Unified Data Protection 10.2之前版本存在安全漏洞，该漏洞源于网络输入处理存在堆缓冲区溢出，可能导致拒绝服务或远程代码执行。

CVSS 9.2 · Critical EPSS 0.53% · P43

Affected Version Matrix 3

VendorProduct Version RangeStatus
Arcserve Unified Data Protection (UDP) 10.2 unaffected
8.0≤ 10.1 affected
≤ 7.* affected
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I. Basic Information for CVE-2025-34523

Vulnerability Information
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Vulnerability Title
Arcserve UDP < 10.2 Pre-Authentication Heap Overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A heap-based buffer overflow vulnerability exists in the network-facing input handling routines of Arcserve Unified Data Protection (UDP). This flaw is reachable without authentication and results from improper bounds checking when processing attacker-controlled input. By sending specially crafted data, a remote attacker can corrupt heap memory, potentially causing a denial of service or enabling arbitrary code execution depending on the memory layout and exploitation techniques used. This vulnerability is similar in nature to CVE-2025-34522 but affects a separate code path or component. No user interaction is required, and exploitation occurs in the context of the vulnerable process. 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
Arcserve Unified Data Protection 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Arcserve Unified Data Protection是Arcserve公司的一体化数据和勒索软件保护解决方案。 Arcserve Unified Data Protection 10.2之前版本存在安全漏洞，该漏洞源于网络输入处理存在堆缓冲区溢出，可能导致拒绝服务或远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Arcserve Unified Data Protection (UDP) 8.0 ~ 10.1 -

II. Public POCs for CVE-2025-34523

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III. Intelligence Information for CVE-2025-34523

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Vendor Advisories for CVE-2025-34523 (1)

Same Patch Batch · Arcserve · 2025-08-27 · 4 CVEs total

CVE-2025-34520 Arcserve UDP < 10.2 Authentication Bypass
CVE-2025-34521 Arcserve UDP < 10.2 Reflected Cross-Site Scripting (XSS)
CVE-2025-34522 Arcserve UDP < 10.2 Pre-Authentication Heap Overflow

IV. Related Vulnerabilities

Same product: Unified Data Protection (UDP)
Same vendor: Arcserve
Same weakness: CWE-122

V. Comments for CVE-2025-34523

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