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Fencer Vulns
critical 9.8

CVE-2022-26501 kev+ ransomware in the critical feed json

Veeam Backup & Replication 10.x and 11.x has Incorrect Access Control (issue 1 of 2).

published 2022-03-17 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-31059

cvss
9.8
version 3.1, CNA
cisa kev
Exploited
added 2022-12-13, used in ransomware
epss
4.1%
EPSS 4.1% chance of exploitation in 30 days, percentile 90%
public exploits
0
none known

Summary

Veeam Backup & Replication 10.x and 11.x has Incorrect Access Control (issue 1 of 2).

Patch / fix

cisa required action Apply updates per vendor instructions.

  • veeam veeam_backup_&_replication 10.0.1.4854, 11.0.1.1261

Timeline

  1. Published
  2. Added to CISA KEV
  3. CISA patch deadline
  4. CISA SSVC: exploitation active

Known exploited

Added
3 y ago
Patch by
2023-01-03 (3 y ago)
Ransomware
Known to be used in ransomware campaigns
Required action
Apply updates per vendor instructions.
Vendor, product
Veeam, Backup & Replication
CISA name
Veeam Backup & Replication Remote Code Execution Vulnerability

Ransomware

Groups reported to have exploited it in intrusions.

  • AvosLocker ransomware gang
  • Cuba ransomware gang

reported by kroll.comsecurelist.com

Ransomware Vulnerability Matrix by BushidoUK (github.com/BushidoUK/Ransomware-Vulnerability-Matrix), reformatted per CVE. CC BY 4.0

ATT&CK techniques

How it is exploited and what it leads to, in MITRE ATT&CK terms.

  • T1190 Exploit Public-Facing Application exploitation
  • T1059 Command and Scripting Interpreter primary impact
  • T1036 Masquerading secondary impact
  • T1048 Exfiltration Over Alternative Protocol secondary impact

kev release 2025-07-28, att&ck v16.1. KEV to ATT&CK mappings by the MITRE Center for Threat-Informed Defense (Mappings Explorer, Apache-2.0). © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation. Terms of use

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
yes
Technical impact
total
Assessed
21 mo ago

Exploit prediction

4.10% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.8 CVSS:3.1/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
CNA 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 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-306 Missing Authentication for Critical Functionality

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.