How severe is CVE-2022-46456?

CVE-2022-46456 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity none, and availability high.

Is CVE-2022-46456 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-46456?

CVE-2022-46456 primarily affects Nasm Netwide Assembler. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-46456?

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

When was CVE-2022-46456 published?

CVE-2022-46456 was published on 2023-01-04 and last updated on 2026-06-17.

CVE-2022-46456

CVE-2022-46456 is a medium-severity vulnerability in Nasm Netwide Assembler with a CVSS 3.x base score of 6.1. 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 6.1)
EPSS exploit prediction: 0% (28th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Nasm Netwide Assembler
Published: 2023-01-04
Last modified: 2026-06-17

Description

NASM v2.16 was discovered to contain a global buffer overflow in the component dbgdbg_typevalue at /output/outdbg.c.

Frequently asked questions

What is CVE-2022-46456?: NASM v2.16 was discovered to contain a global buffer overflow in the component dbgdbg_typevalue at /output/outdbg.c.
How severe is CVE-2022-46456?: CVE-2022-46456 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity none, and availability high.
Is CVE-2022-46456 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-46456?: CVE-2022-46456 primarily affects Nasm Netwide Assembler. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-46456?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-46456 published?: CVE-2022-46456 was published on 2023-01-04 and last updated on 2026-06-17.

References

https://bugzilla.nasm.us/show_bug.cgi?id=3392814

Affected products (11)

cpe:2.3:a:nasm:netwide_assembler:2.16:-:*:*:*:*:*:*
cpe:2.3:a:nasm:netwide_assembler:2.16:rc10:*:*:*:*:*:*
cpe:2.3:a:nasm:netwide_assembler:2.16:rc11:*:*:*:*:*:*
cpe:2.3:a:nasm:netwide_assembler:2.16:rc12:*:*:*:*:*:*
cpe:2.3:a:nasm:netwide_assembler:2.16:rc4:*:*:*:*:*:*
cpe:2.3:a:nasm:netwide_assembler:2.16:rc5:*:*:*:*:*:*
cpe:2.3:a:nasm:netwide_assembler:2.16:rc6:*:*:*:*:*:*
cpe:2.3:a:nasm:netwide_assembler:2.16:rc7:*:*:*:*:*:*
cpe:2.3:a:nasm:netwide_assembler:2.16:rc8:*:*:*:*:*:*
cpe:2.3:a:nasm:netwide_assembler:2.16:rc9:*:*:*:*:*:*
cpe:2.3:a:nasm:netwide_assembler:2.16.01:*:*:*:*:*:*:*

More vulnerabilities in Nasm Netwide Assembler

CVE-2004-1287 — Critical (CVSS 10.0): Buffer overflow in the error function in preproc.c for NASM 0.98.38 1.2 allows attackers to execute arbitrary code via…
CVE-2020-24978 — Critical (CVSS 9.8): In NASM 2.15.04rc3, there is a double-free vulnerability in pp_tokline asm/preproc.c. This is fixed in commit…
CVE-2026-6068 — Critical (CVSS 9.6): NASM contains a heap use after free vulnerability in response file (-@) processing where a dangling pointer to freed…
CVE-2008-7177 — Critical (CVSS 9.3): Buffer overflow in the listing module in Netwide Assembler (NASM) before 2.03.01 has unknown impact and attack vectors,…
CVE-2023-31722 — High (CVSS 7.8): There exists a heap buffer overflow in nasm 2.16.02rc1 (GitHub commit: b952891).
CVE-2022-44370 — High (CVSS 7.8): NASM v2.16 was discovered to contain a heap buffer overflow in the component quote_for_pmake() asm/nasm.c:856

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