How severe is CVE-2018-1000667?

CVE-2018-1000667 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-2018-1000667 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-1000667?

CVE-2018-1000667 primarily affects Nasm Netwide Assembler. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-1000667?

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

When was CVE-2018-1000667 published?

CVE-2018-1000667 was published on 2018-09-06 and last updated on 2026-06-17.

CVE-2018-1000667

CVE-2018-1000667 is a medium-severity vulnerability in Nasm Netwide Assembler 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-119.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Nasm Netwide Assembler
Published: 2018-09-06
Last modified: 2026-06-17

Description

NASM nasm-2.13.03 nasm- 2.14rc15 version 2.14rc15 and earlier contains a memory corruption (crashed) of nasm when handling a crafted file due to function assemble_file(inname, depend_ptr) at asm/nasm.c:482. vulnerability in function assemble_file(inname, depend_ptr) at asm/nasm.c:482. that can result in aborting/crash nasm program. This attack appear to be exploitable via a specially crafted asm file..

Frequently asked questions

What is CVE-2018-1000667?: NASM nasm-2.13.03 nasm- 2.14rc15 version 2.14rc15 and earlier contains a memory corruption (crashed) of nasm when handling a crafted file due to function assemble_file(inname, depend_ptr) at asm/nasm.c:482. vulnerability in function assemble_file(inname, depend_ptr) at asm/nasm.c:482. that can result in aborting/crash nasm program. This attack appear to be exploitable via a specially crafted asm file..
How severe is CVE-2018-1000667?: CVE-2018-1000667 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-2018-1000667 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-1000667?: CVE-2018-1000667 primarily affects Nasm Netwide Assembler. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-1000667?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-1000667 published?: CVE-2018-1000667 was published on 2018-09-06 and last updated on 2026-06-17.

References

Affected products (16)

cpe:2.3:a:nasm:netwide_assembler:*:*:*:*:*:*:*:*
cpe:2.3:a:nasm:netwide_assembler:2.14.0:rc1:*:*:*:*:*:*
cpe:2.3:a:nasm:netwide_assembler:2.14.0:rc10:*:*:*:*:*:*
cpe:2.3:a:nasm:netwide_assembler:2.14.0:rc11:*:*:*:*:*:*
cpe:2.3:a:nasm:netwide_assembler:2.14.0:rc12:*:*:*:*:*:*
cpe:2.3:a:nasm:netwide_assembler:2.14.0:rc13:*:*:*:*:*:*
cpe:2.3:a:nasm:netwide_assembler:2.14.0:rc14:*:*:*:*:*:*
cpe:2.3:a:nasm:netwide_assembler:2.14.0:rc15:*:*:*:*:*:*
cpe:2.3:a:nasm:netwide_assembler:2.14.0:rc2:*:*:*:*:*:*
cpe:2.3:a:nasm:netwide_assembler:2.14.0:rc3:*:*:*:*:*:*
cpe:2.3:a:nasm:netwide_assembler:2.14.0:rc4:*:*:*:*:*:*
cpe:2.3:a:nasm:netwide_assembler:2.14.0:rc5:*:*:*:*:*:*
cpe:2.3:a:nasm:netwide_assembler:2.14.0:rc6:*:*:*:*:*:*
cpe:2.3:a:nasm:netwide_assembler:2.14.0:rc7:*:*:*:*:*:*
cpe:2.3:a:nasm:netwide_assembler:2.14.0:rc8:*:*:*:*:*:*
cpe:2.3:a:nasm:netwide_assembler:2.14.0:rc9:*:*:*:*:*:*

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