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Fencer Vulns
critical 9.8

CVE-2020-10915 in the critical feed json

This vulnerability allows remote attackers to execute arbitrary code on affected installations of VEEAM One Agent 9.5.4.4587.

published 2020-04-22 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-3321

cvss
9.8
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
86.7%
EPSS 86.7% chance of exploitation in 30 days, percentile 99.7%
public exploits
1
Metasploit

Summary

This vulnerability allows remote attackers to execute arbitrary code on affected installations of VEEAM One Agent 9.5.4.4587. Authentication is not required to exploit this vulnerability. The specific flaw exists within the HandshakeResult method. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-10401.

Timeline

  1. First public exploit (Metasploit exploit/windows/misc/veeam_one_agent_deserialization)
  2. Published

Exploit prediction

86.73% chance of exploitation in the next 30 days, higher than 99.7% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

CVSS scores

assigned by version score vector
CNA 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • VEEAM One Agent

Classification

Weakness
  • CWE-502 Deserialization of Untrusted Data

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.