7.1

CVE-2024-23440: anti-virus vba32 Out-of-bounds Read

CVSS: 7.1v3.1HighModified
Published 13-02-2024Last modified 19-05-2025
Open JSON

Vulnerability summary

CVE-2024-23440 is a high (CVSS 7.1) Out-of-bounds Read vulnerability in anti-virus vba32. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 10.7% of scored vulnerabilities.

Overall risk
28/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.1/10
010
High · v3.1 (CVE.org)
EPSS score
0.21%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 13-02-2024
    PublishedVulnerability first disclosed.
  2. 19-05-2025
    Last modifiedVulnerability information updated.

Description

Vba32 Antivirus v3.36.0 is vulnerable to an Arbitrary Memory Read vulnerability. The 0x22200B IOCTL code of the Vba32m64.sys driver allows to read up to 0x802 of memory from ar arbitrary user-supplied pointer.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

11%

Versus all other CVEs

30-day change

0.00 pp

From 0.21% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.21%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Anti-virus1 product
Virusblokada1 product

2 vendors · 2 products

References

2 links