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CVE-2023-29583

MEDIUM
5.5
CVSS Score
Published: April 24, 2023 at 12:00 AM UTC
Updated: June 17, 2026 at 05:50 AM UTC
1 product affected across 1 vendorYasm

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.3%
SSVC
PoC

Description

yasm 1.3.0.55.g101bc was discovered to contain a stack overflow via the function parse_expr5 at /nasm/nasm-parse.c. Note: This has been disputed by third parties who argue this is a bug and not a security issue because yasm is a standalone program not designed to run untrusted code.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

ExploitIssue Tracking
Source: [email protected]
https://github.com/yasm/yasm/issues/218
Exploit
Source: [email protected]
https://github.com/z1r00/fuzz_vuln/blob/main/yasm/stack-overflow/parse_expr5/readme.md

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-787CWE-121

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