HOMEVULNERABILITIESCVE-2023-5760
HIGH

CVE-2023-5760

CWE-367Published: November 8, 2023· Updated: Jun 17, 2026

7.0
CVSS v3.1

Official Description

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.

NVD Source

Technical Analysis

CVE-2023-5760 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.0.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityHigh
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

avast1 product(s)
avg antivirus
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://support.norton.com/sp/static/external/tools/security-advisories.html
ADVISORYhttps://support.norton.com/sp/static/external/tools/security-advisories.html

All References (2)

→
https://support.norton.com/sp/static/external/tools/security-advisories.htmlThird Party Advisory
→
https://support.norton.com/sp/static/external/tools/security-advisories.htmlThird Party Advisory

Quick Facts

CVE IDCVE-2023-5760
CVSS Score7.0 / 10
SeverityHIGH
WeaknessCWE-367
CISA KEVNo
Affected1 vendor(s)
PublishedNov 8, 2023

Related CVEs (CWE-367)

CVE-2025-64180
10.0
CVE-2019-5421
9.8
CVE-2019-7249
9.8
CVE-2024-27114
9.8
CVE-2024-56337
9.8
CVE-2023-33154
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-5760 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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