CVE-2021-35971

CRITICAL
9.8
CVSS Score
Published: June 30, 2021 at 02:28 PM UTC
Updated: June 17, 2026 at 03:58 AM UTC
1 product affected across 1 vendorVeeam Backup & Replication

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Severity
CRITICAL9.8
Exploit prediction
EPSS 1%

Description

Veeam Backup and Replication 10 before 10.0.1.4854 P20210609 and 11 before 11.0.0.837 P20210507 mishandles deserialization during Microsoft .NET remoting.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

10.0 ≤ v < 10.0.1.485411.0 ≤ v < 11.0.0.837
Affected range stops below 10.0.1.4854, so it looks safe — our inference, not a vendor statement
Affected range stops below 11.0.0.837, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

x_refsource_MISCRelease NotesVendor Advisory
https://www.veeam.com/kb4126
x_refsource_MISCRelease NotesVendor Advisory
https://www.veeam.com/kb4180

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-502

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