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Veeam Backup Replication CVE-2024-45204

MEDIUM
Incorrect Authorization (CWE-863)
2024-12-04 support@hackerone.com
4.3
CVSS 3.1 · NVD
View

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Authorization logic validation
MITRE ATT&CK

1 technique across 1 tactic: Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

CVSS score of 4.3 (MEDIUM). Attack characteristics: network attack vector, low complexity, low privileges required, no user interaction not required.

Exploit ScenarioDerived

A remote attacker could bypass authorization checks to access restricted resources by sending crafted requests to the affected application.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.4% exploitation probability (EPSS)

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AnalysisAI

A vulnerability exists where a low-privileged user can exploit insufficient permissions in credential handling to leak NTLM hashes of saved credentials. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Review and test authorization logic, implement consistent access control checks, use centralized authorization framework.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Incorrect Authorization (CWE-863), which allows attackers to bypass authorization checks to access restricted resources. A vulnerability exists where a low-privileged user can exploit insufficient permissions in credential handling to leak NTLM hashes of saved credentials. The exploitation involves using retrieved credentials to expose sensitive NTLM hashes, impacting systems beyond the initial target and potentially leading to broader security vulnerabilities. Affected products include: Veeam Veeam Backup \& Replication.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 4.3 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

DescriptionNVD

A vulnerability exists where a low-privileged user can exploit insufficient permissions in credential handling to leak NTLM hashes of saved credentials. The exploitation involves using retrieved credentials to expose sensitive NTLM hashes, impacting systems beyond the initial target and potentially leading to broader security vulnerabilities.

Threat Intelligence Overview

EPSS Score
0.4%
Top 72% exploitable
Data Quality
2 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.4%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

22
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +22
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Affected Products (CPE)NVD

cpe:2.3:a:veeam:veeam_backup_\&_replication:*:*:*:*:*:*:*:*
CVE-2024-40711 CRITICAL POC
9.8 Sep 07

A deserialization of untrusted data vulnerability with a malicious payload can allow an unauthenticated remote code exec

CVE-2020-15518 HIGH POC
8.8 Jul 03

VeeamFSR.sys in Veeam Availability Suite before 10 and Veeam Backup & Replication before 10 has no device object DACL, w

CVE-2026-21708 CRITICAL
9.9 Mar 12

Veeam Backup & Replication allows a user with the Backup Viewer role (read-only) to escalate to remote code execution as

CVE-2026-21667 CRITICAL
9.9 Mar 12

A second RCE vulnerability in Veeam Backup & Replication allows any authenticated domain user to execute code on the Bac

CVE-2026-21666 CRITICAL
9.9 Mar 12

Veeam Backup & Replication allows an authenticated domain user to achieve remote code execution on the Backup Server. Wi

CVE-2026-21669 CRITICAL
9.9 Mar 12

Yet another Veeam Backup & Replication RCE vulnerability allowing authenticated domain users to execute code on the Back

CVE-2025-48983 CRITICAL
9.9 Oct 31

Remote code execution in the Mount service of Veeam Backup & Replication allows any authenticated domain user to execute

CVE-2025-55125 CRITICAL
9.8 Jan 08

Remote code execution as root in Veeam Backup & Replication allows an authenticated Backup Operator or Tape Operator to

CVE-2024-29849 CRITICAL
9.8 May 22

Veeam Backup Enterprise Manager allows unauthenticated users to log in as any user to enterprise manager web interface.

CVE-2022-26501 CRITICAL
9.8 Mar 17

Veeam Backup & Replication 10.x and 11.x has Incorrect Access Control (issue 1 of 2). Rated critical severity (CVSS 9.8)

CVE-2021-35971 CRITICAL
9.8 Jun 30

Veeam Backup and Replication 10 before 10.0.1.4854 P20210609 and 11 before 11.0.0.837 P20210507 mishandles deserializati

CVE-2026-21671 CRITICAL
9.1 Mar 12

Veeam Backup & Replication allows Backup Administrators to achieve RCE in high-availability deployments. While requiring

References

Advisories & patches

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