CVE-2025-34523 (GCVE-0-2025-34523)

Vulnerability from cvelistv5 – Published: 2025-08-27 21:19 – Updated: 2026-08-04 15:30
VLAI
Title
Arcserve UDP < 10.2 Pre-Authentication Heap Overflow
Summary
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.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-08-29 03:55 UTC
CWE
  • CWE-122 - Heap-based Buffer Overflow
References
Impacted products
Vendor Product Version CPE status
Arcserve Unified Data Protection (UDP) Unaffected: 10.2
Affected: 8.0 , ≤ 10.1 (custom)
Affected: 0 , ≤ 7.* (custom)
    cpe:2.3:a:arcserve:udp:*:*:*:*:*:*:*:*
    cpe:2.3:a:arcserve:udp:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
Show details on NVD website

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              "url": "https://support.arcserve.com/s/article/Important-Security-Bulletin-Must-read-for-all-Arcserve-UDP-customers-on-all-versions"
            }
          ],
          "source": {
            "discovery": "UNKNOWN"
          },
          "title": "Arcserve UDP \u003c 10.2 Pre-Authentication Heap Overflow",
          "x_generator": {
            "engine": "vulncheck"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "assignerShortName": "VulnCheck",
        "cveId": "CVE-2025-34523",
        "datePublished": "2025-08-27T21:19:26.658Z",
        "dateReserved": "2025-04-15T19:15:22.612Z",
        "dateUpdated": "2026-08-04T15:30:52.235Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Taxonomy of the tags.


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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