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01 Record

CVE-2025-13032

Double fetch in sandbox kernel driver in Avast/AVG Antivirus <25.3 on windows allows local attacker to escalate privelages via pool overflow.

CriticalPUBLISHEDCNA: NLOK
CNA base score9.9 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

02 Description

Double fetch in sandbox kernel driver in Avast/AVG Antivirus <25.3 on windows allows local attacker to escalate privelages via pool overflow.

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.24% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 16.0% of scored records. A rank, not a probability.
NVD base score
7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Analyzed. NVD last modified this record on 2026-10-23.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2025-11-11 16:16Z11 MO AGO
Last updated
2025-11-14 19:27Z11 MO AGO
Reserved
2025-11-11
Assigning CNA
NLOK
Record state
PUBLISHED
Severity
Critical (CVSS 9.9)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weaknesses
  • CWE-367Time-of-check Time-of-use (TOCTOU) Race ConditionBase
Data version
5.2
Document digest
3bfbb26a4f19e4d812723ae0bccc6c1f364b4687c1781b250b32eadef823abdc

05 Affected products

VendorProductVersionsPlatforms
Avast(Free/Premiium/Ultimeat) Antivirus0 to < 25.3Windows
AvsatOne0 to < 25.3Windows

06 References

07 Remediation

Upgrade to a version after >= 25.3