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CVE-2024-40711

Known ransomware campaign use. CISA's KEV catalog lists this CVE as used in ransomware attacks.
CISA KEV
Exploited
Ransomware Use
CVSS 3.1 Score
9.8
CRITICAL
EPSS Score
90.37%
EPSS Percentile
99.8%
as of 2026-10-07
NVD Status
Analyzed
Published 2024-09-07
Description

A deserialization of untrusted data vulnerability with a malicious payload can allow an unauthenticated remote code execution (RCE).

Affected Vendor / Product
Veeam Veeam Backup \& Replication
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE)
CWE-502
Last Modified
2026-06-17
CVSS 3.1 Vector Breakdown
CISA Vulnrichment (SSVC)
Exploitation: active Automatable: yes Technical Impact: total
Exploitation Intelligence (2 sources)
Source Exploited Ransomware Use Notes
cisa-kev Yes Known KEV entry: Veeam Backup and Replication Deserialization Vulnerability | Affected: Veeam / Backup & Replication | Description: Veeam Backup and Replication contains a deserialization vulnerability allowing an unauthenticated user to perform remote code execution. | Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. | Due date: 2024-11-07 | Known ransomware campaign use (KEV): Known | Notes (KEV): https://www.veeam.com/kb4649 ; https://nvd.nist.gov/vuln/detail/CVE-2024-40711
kevintel Yes Known KEVIntel entry: A deserialization of untrusted data vulnerability with a malicious payload can allow an unauthenticated remote code execution (RCE). | Affected: Veeam / Backup and Recovery | CVSS: 9.8 (CRITICAL) | Used in malware: yes | Not yet in CISA KEV: False
Correlated via CISA KEV, Shadowserver & KEVIntel.com. Source: vulnerability-lookup.org
Vendor Exploitability (VEX) (1 statement)
Vendor Source Status Statement
Red Hat CSAF VEX known not affected (1) Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.
Detection Rules (1)
suricata CVE-2024-40711 exploitation attempt
VEDAS-Driven Autonomous Generation of Suricata Rules for CVEs
Exploited By Ransomware Groups (1)
Ransomware Group Vendor Product Source
Akira Veeam Backup & Replication @SophosXOps
References