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Veeam Agent CVE-2025-48982

HIGH
Improper Privilege Management (CWE-269)
2025-10-31 support@hackerone.com
7.8
CVSS 3.1 · NVD
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Craft malicious restore file
  2. Delivery
    Socially engineer admin to restore it
  3. Exploit
    Admin executes restore in Veeam Agent
  4. Execution
    Code runs with elevated privileges
  5. Impact
    Full privilege escalation on host

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V8 - Authorization Least privilege enforcement
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.

Exploitation Conditions

Exploitation requires a system administrator to be tricked into restoring an attacker-supplied malicious file through Veeam Agent for Microsoft Windows' restore functionality; the malicious file is then processed with elevated privileges, yielding local privilege escalation. Limiting factors that reduce realistic risk: the attack vector is local (AV:L), it requires active user interaction (UI:R) by a privileged administrator performing a deliberate restore operation, and it depends on successful social engineering rather than any autonomous or remote trigger. It applies to the Windows agent specifically; no special non-default configuration is indicated in the available data.

Impact

This is a moderate-priority local privilege escalation (CWE-269) in Veeam Agent for Microsoft Windows carrying a CVSS 3.1 base score of 7.8. The vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H shows a local attack vector with low complexity and no attacker privileges required, but exploitation is gated behind user interaction (UI:R) - specifically a system administrator being socially engineered into restoring a malicious file. Although PR:N keeps the score high, the real-world risk is tempered by the fact that the victim must be a privileged operator who takes a deliberate, non-routine action (restoring an attacker-supplied file), which is a meaningful barrier compared to a fully unauthenticated remote flaw. No EPSS score, CISA KEV listing, or public POC was provided in the input, so there is no public exploit identified at time of analysis and no evidence of active exploitation; the high CVSS is driven by the full C/I/A impact (privilege escalation to higher rights) rather than by demonstrated widespread exploitability. Net assessment: patch in normal cadence and prioritize where admins routinely restore externally-sourced backups - treat as a solid-but-not-emergency fix rather than a drop-everything issue. Note the input lacks EPSS/KEV/POC signals entirely, so the exploitation-likelihood dimension cannot be independently corroborated.

Exploit ScenarioDerived

An attacker crafts a malicious backup/restore file and uses social engineering to convince a Windows system administrator to restore it via Veeam Agent. When the privileged administrator performs the restore, the malicious content is processed with elevated rights, escalating the attacker's control to that privilege level. No public exploit code was identified at time of analysis, and the local vector plus required admin interaction (UI:R) make this a targeted rather than mass-exploitable scenario.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 07, 2026

Local privilege escalation in Veeam Agent for Microsoft Windows is triggered when a system administrator is socially engineered into restoring an attacker-supplied malicious file through the agent's restore function, which then processes that file with elevated privileges and grants the attacker higher-level access on the host. The issue is rated CVSS 3.1 base 7.8 (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) per the authoritative assessment, and its practical risk is moderated by the local attack vector, the mandatory interaction of a privileged administrator, and the reliance on successful social engineering rather than any remote or autonomous trigger. No public exploit code has been identified and the vulnerability is not confirmed as actively exploited (no CISA KEV entry); only the Windows agent is affected, and no special non-default configuration is indicated in the available data.

RemediationAI

No vendor-released patch or exact fix version is confirmed in the available data; consult the Veeam advisory at https://www.veeam.com/kb4771 for the authoritative patch status and any updated build that addresses the restore-handling privilege issue, and prioritize upgrading once a fixed version is published. As a compensating control, restrict restore functionality to trusted administrators and require that restore sources be verified for integrity and known provenance before execution, recognizing that this adds a manual verification step and does not eliminate the underlying privilege-management flaw. Where feasible, perform restores from a hardened, isolated management workstation or a lower-privileged account rather than a full SYSTEM/elevated context, though this may reduce restore reliability for some recovery scenarios, and maintain endpoint detection tuned to unexpected child processes or file execution originating from the restore workflow.

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 is a CWE-269 (Improper Privilege Management) flaw in Veeam Agent for Microsoft Windows, the backup and bare-metal restore agent that commonly runs with SYSTEM-level or otherwise elevated rights on Windows endpoints. Because the restore workflow operates under those elevated privileges, a crafted file supplied by an attacker and selected during a restore operation is processed in a trusted, high-integrity context, allowing the attacker's payload to inherit or abuse that privilege level. The affected product is identified by the CPE cpe:2.3:a:veeam:veeam_agent_for_windows:*:*:*:*:*:*:*:*, and the CVSS vector (AV:L, PR:N, UI:R) describes an attacker who needs local delivery of a malicious file plus the deliberate action of a privileged operator to initiate the restore, rather than a remote, unauthenticated network attack. The root cause class is improper privilege management during file handling/restore rather than a memory-safety or injection issue.

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Severity by source

NVD PRIMARY 7.8 HIGH
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
vuln.today AI 7.8 HIGH

Local vector since the malicious file is restored on the host (AV:L); PR:N because the attacker needs no prior access, only to supply the file, while UI:R captures the admin-performed restore that yields full C/I/A impact.

3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
4.0 AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from NVD.

CVSS VectorNVD

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

DescriptionNVD

This vulnerability in Veeam Agent for Microsoft Windows allows for Local Privilege Escalation if a system administrator is tricked into restoring a malicious file.

Executive ViewAI

Why It Matters

Veeam Agent for Microsoft Windows is affected by a high-severity local privilege escalation vulnerability that could allow an attacker to gain elevated access on backup hosts if a system administrator is socially engineered into restoring a malicious file. This requires attacker-induced user interaction, but successful exploitation could compromise backup infrastructure and enable lateral movement within the network. Leadership should prioritize risk mitigation for Windows backup environments, particularly given the absence of a vendor patch and no public exploit identified at time of analysis.

Business Impact: High
Compensating Controls

Restrict restore functionality to trusted administrators only, implement user awareness training against social engineering, monitor restore operations for unexpected or malicious files, and enforce least privilege on backup hosts.

Threat Intelligence Overview

EPSS Score
0.2%
Top 93% exploitable
Prevalence
High
widely deployed enterprise backup agent from a major backup vendor
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 HIGH
CISA KEV No
Public POC No
EPSS 0.2%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
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
Defer
Exploitation· derived
None
System Exposure· derived
Small
Automatable· derived
No
Human Impact
High

Priority Score

39
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +39
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.

Affected Products (CPE)NVD

cpe:2.3:a:veeam:veeam_agent_for_windows:*:*:*:*:*:*:*:*

References

Advisories & patches

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