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CVE-2023-29581

20
FAUCET Score

CVE-2023-29581 is a segmentation violation vulnerability in yasm 1.3.0.55.g101bc, specifically within the delete_Token function in modules/preprocs/nasm/nasm-pp.c. This medium-severity vulnerability (CVSS 5.5) requires local access and user interaction, potentially leading to a denial of service if exploited. While the vendor considers it to have no security relevance due to expected input validation or sandboxing, there is currently no evidence of active exploitation, public exploit code, or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
1.3.0.55.g101bcCPE matchmatch criteria
cpe:2.3:a:yasm_project:yasm:1.3.0.55.g101bc:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.34%
Probability of exploitation in next 30 days
EPSS Percentile
26.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0034 is in the 33rd percentile among its peer group of 5,758 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

microsoft2023-Apr/CVE-2023-29581Moderate

yasm 1.3.0.55.g101bc has a segmentation violation in the function delete_Token at modules/preprocs/nasm/nasm-pp.c. NOTE: although a libyasm application could become unavailable if this were exploited, the vendor's position is that there is no security relevance because there is either supposed to be input validation before data reaches libyasm, or a sandbox in which the application runs.

Apr 11, 2023

References

bugzilla.redhat.com / show_bug.cgi
github.com / yasm/yasm/blob/master/SECURITY.md
github.com / yasm/yasm/issues/216
ExploitIssue TrackingThird Party Advisory
github.com / z1r00/fuzz_vuln/blob/main/yasm/segv/delete_Token/readme.md
ExploitThird Party Advisory