How severe is CVE-2023-49554?

CVE-2023-49554 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-2023-49554 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-49554?

CVE-2023-49554 affects Yasm Project Yasm. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-49554?

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

Does CVE-2023-49554 have an EU (EUVD) identifier?

Yes. CVE-2023-49554 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-53511.

When was CVE-2023-49554 published?

CVE-2023-49554 was published on 2024-01-03 and last updated on 2026-06-17.

CVE-2023-49554

CVE-2023-49554 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. The underlying weakness is classified as CWE-416.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-53511
Weakness: CWE-416
Affected product: Yasm Project Yasm
Published: 2024-01-03
Last modified: 2026-06-17

Description

Use After Free vulnerability in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the do_directive function in the modules/preprocs/nasm/nasm-pp.c component.

Frequently asked questions

What is CVE-2023-49554?: Use After Free vulnerability in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the do_directive function in the modules/preprocs/nasm/nasm-pp.c component.
How severe is CVE-2023-49554?: CVE-2023-49554 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-2023-49554 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-49554?: CVE-2023-49554 affects Yasm Project Yasm. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-49554?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-49554 have an EU (EUVD) identifier?: Yes. CVE-2023-49554 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-53511.
When was CVE-2023-49554 published?: CVE-2023-49554 was published on 2024-01-03 and last updated on 2026-06-17.

References

https://github.com/yasm/yasm/issues/249

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-2023-49558 — 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-2023-37732 — 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…

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