How severe is CVE-2023-49558?

CVE-2023-49558 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-49558 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-49558?

CVE-2023-49558 affects Yasm Project Yasm. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-49558?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2023-49558 have an EU (EUVD) identifier?

Yes. CVE-2023-49558 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-53515.

When was CVE-2023-49558 published?

CVE-2023-49558 was published on 2024-01-03 and last updated on 2026-06-17.

CVE-2023-49558

CVE-2023-49558 is a medium-severity vulnerability in Yasm Project Yasm with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-53515
Affected product: Yasm Project Yasm
Published: 2024-01-03
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2023-49558?: 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.
How severe is CVE-2023-49558?: CVE-2023-49558 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-49558 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-49558?: CVE-2023-49558 affects Yasm Project Yasm. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-49558?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-49558 have an EU (EUVD) identifier?: Yes. CVE-2023-49558 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-53515.
When was CVE-2023-49558 published?: CVE-2023-49558 was published on 2024-01-03 and last updated on 2026-06-17.

References

https://github.com/yasm/yasm/issues/252

Affected products (1)

cpe:2.3:a:yasm_project:yasm:1.3.0.86.g9def:*:*:*:*:*:*:*

More vulnerabilities in Yasm Project Yasm

CVE-2023-31724 — High (CVSS 7.8): yasm 1.3.0.55.g101bc was discovered to contain a segmentation violation via the function do_directive at…
CVE-2023-49557 — Medium (CVSS 5.5): An issue in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the yasm_section_bcs_first…
CVE-2023-49556 — Medium (CVSS 5.5): Buffer Overflow vulnerability in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the…
CVE-2023-49555 — Medium (CVSS 5.5): An issue in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the expand_smacro function in…
CVE-2023-49554 — Medium (CVSS 5.5): Use After Free vulnerability in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the…
CVE-2023-37732 — Medium (CVSS 5.5): Yasm v1.3.0.78 was found prone to NULL Pointer Dereference in /libyasm/intnum.c and /elf/elf.c, which allows the…

All CVEs affecting Yasm Project Yasm →