How severe is CVE-2023-49556?

CVE-2023-49556 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-2023-49556 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-49556?

CVE-2023-49556 affects Yasm Project Yasm. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-49556?

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

Does CVE-2023-49556 have an EU (EUVD) identifier?

Yes. CVE-2023-49556 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-53513.

When was CVE-2023-49556 published?

CVE-2023-49556 was published on 2024-01-03 and last updated on 2026-06-17.

CVE-2023-49556

CVE-2023-49556 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-120.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (33rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-53513
Weakness: CWE-120
Affected product: Yasm Project Yasm
Published: 2024-01-03
Last modified: 2026-06-17

Description

Buffer Overflow vulnerability in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the expr_delete_term function in the libyasm/expr.c component.

Frequently asked questions

What is CVE-2023-49556?: Buffer Overflow vulnerability in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the expr_delete_term function in the libyasm/expr.c component.
How severe is CVE-2023-49556?: CVE-2023-49556 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-2023-49556 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-49556?: CVE-2023-49556 affects Yasm Project Yasm. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-49556?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-49556 have an EU (EUVD) identifier?: Yes. CVE-2023-49556 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-53513.
When was CVE-2023-49556 published?: CVE-2023-49556 was published on 2024-01-03 and last updated on 2026-06-17.

References

https://github.com/yasm/yasm/issues/250

Affected products (1)

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

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