How severe is CVE-2023-31723?

CVE-2023-31723 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-2023-31723 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-31723?

CVE-2023-31723 affects Yasm Project Yasm. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-31723?

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

When was CVE-2023-31723 published?

CVE-2023-31723 was published on 2023-05-17 and last updated on 2026-06-17.

CVE-2023-31723

CVE-2023-31723 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% (21st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Yasm Project Yasm
Published: 2023-05-17
Last modified: 2026-06-17

Description

yasm 1.3.0.55.g101bc was discovered to contain a segmentation violation via the function expand_mmac_params at /nasm/nasm-pp.c.

Frequently asked questions

What is CVE-2023-31723?: yasm 1.3.0.55.g101bc was discovered to contain a segmentation violation via the function expand_mmac_params at /nasm/nasm-pp.c.
How severe is CVE-2023-31723?: CVE-2023-31723 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-2023-31723 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-31723?: CVE-2023-31723 affects Yasm Project Yasm. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-31723?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-31723 published?: CVE-2023-31723 was published on 2023-05-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:yasm_project:yasm:1.3.0.55.g101bc:*:*:*:*:*:*:*

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-2023-49558 — 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_mmac_params…
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…

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