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TI-2023-05298 Aliases CVE-2023-5760GHSA-c65v-cwf9-f69v

Time-of-check to time-of-use (TOCTOU) bug leads to full local privilege escalation.

Priority LOW 37CWE-367Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

A time-of-check to time-of-use (TOCTOU) bug in handling of IOCTL (input/output control) requests. This TOCTOU bug leads to an out-of-bounds write vulnerability which can be further exploited, allowing an attacker to gain full local privilege escalation on the system.This issue affects Avast/Avg Antivirus: 23.8.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0019 8th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Avast/AVGAvast/Avg Antivirus 23.8—No fix listedCNA
  • Avast/Avg Antivirus VendorAvast/AVG Affected 23.8 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:avast:avg_antivirus:23.8:*:*:*:*:*:*:*23.8VulnerableAvast
  • cpe:2.3:a:avast:avg_antivirus:23.8:*:*:*:*:*:*:* Versions 23.8 Vulnerable ·Avast

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-5760
  2. 2026-10-03 Alias added: GHSA-c65v-cwf9-f69v

References

Advisory 1

  • TI-2022-03818 Avast and AVG Antivirus for Windows vulnerable to Privilege Escalation CVSS 3.1HIGH 8.8
  • TI-2020-10717 An elevation of privilege vulnerability exists in Avast Free Antivirus and AVG AntiVirus… CVSS 3.1MEDIUM 5.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences