An issue in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via…
Priority MEDIUM 58Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.
Summary
An issue in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the expand_mmac_params function in the modules/preprocs/nasm/nasm-pp.c component.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00382 32nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:yasm_project:yasm:1.3.0.86.g9def:*:*:*:*:*:*:* | 1.3.0.86.g9def | Vulnerable | Yasm Project |
- cpe:2.3:a:yasm_project:yasm:1.3.0.86.g9def:*:*:*:*:*:*:* Versions 1.3.0.86.g9def Vulnerable ·Yasm Project
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2023-49558
- 2026-10-03 Alias added: GHSA-w3p5-6w9w-p383
References
More Yasm Project Yasm vulnerabilities
- TI-2023-27061 An issue in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via… CVSS 3.1MEDIUM 5.5
- TI-2023-13935 yasm 1.3.0.55.g101bc was discovered to contain a stack overflow via the function… CVSS 3.1MEDIUM 6.2
- TI-2023-27060 Buffer Overflow vulnerability in YASM 1.3.0.86.g9def allows a remote attacker to cause a… CVSS 3.1MEDIUM 5.5
- TI-2023-27059 An issue in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via… CVSS 3.1MEDIUM 5.5
- TI-2023-27058 Use After Free vulnerability in YASM 1.3.0.86.g9def allows a remote attacker to cause a… CVSS 3.1MEDIUM 5.5
- TI-2023-19245 Yasm v1.3.0.78 was found prone to NULL Pointer Dereference in /libyasm/intnum.c and… CVSS 3.1MEDIUM 5.5
Sources
- CVE-2023-49558 · CVE Program
- CVE-2023-49558 · NVD
- FIRST EPSS
- GHSA-w3p5-6w9w-p383 · GitHub Advisory Database · CC BY 4.0
- CVE-2023-49558 · Red Hat security data · CC BY 4.0
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