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CVE-2023-40481

37
FAUCET Score

CVE-2023-40481 is an out-of-bounds write vulnerability in 7-Zip affecting its SquashFS file parsing, allowing remote code execution. This high-severity flaw (CVSS 7.8) requires user interaction, typically opening a malicious file, to exploit. While it enables an attacker to execute code in the context of the current process, there is currently no public exploit code, Metasploit module, or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
22.01CPE matchmatch criteria
cpe:2.3:a:7-zip:7-zip:22.01:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
27.09%
Probability of exploitation in next 30 days
EPSS Percentile
97.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.2709 is in the 98th percentile among its peer group of 11,616 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

sourceforge.net / p/sevenzip/discussion/45797/thread/713c8a8269
ProductRelease Notes
zerodayinitiative.com / advisories/ZDI-23-1164
Third Party Advisory