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CVE-2020-10915

80
FAUCET Score

CVE-2020-10915 is a critical deserialization vulnerability affecting Veeam ONE Agent version 9.5.4.4587. This flaw allows unauthenticated remote attackers to execute arbitrary code in the context of the service account due to improper validation of user-supplied data in the HandshakeResult method. With a CVSS score of 9.8 (CRITICAL) and an EPSS score indicating high exploitability, this vulnerability poses a significant risk. While not on the KEV catalog or Hot List, a Metasploit module exists for exploitation, and despite its severity, there is minimal public discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
9.5.4.4587CPE matchmatch criteria
cpe:2.3:a:veeam:one:9.5.4.4587:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
86.62%
Probability of exploitation in next 30 days
EPSS Percentile
99.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Metasploit: Veeam ONE Agent .NET Deserialization · Apr 15, 2020
This CVE's current EPSS score of 0.8662 is in the 99th percentile among its peer group of 36,862 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

packetstormsecurity.com / files/157529/Veeam-ONE-Agent-.NET-Deserialization.html
veeam.com / kb3144
Vendor Advisory
zerodayinitiative.com / advisories/ZDI-20-546
Third Party AdvisoryVDB Entry