CVE-2018-16517

Name: CVE-2018-16517
Creator: NVD / NIST
Published: 2018-09-06T23:29:01.46+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 5.17%

Last modified Jun 17, 2026

CVE-2018-16517 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. asm/labels.c in Netwide Assembler (NASM) is prone to NULL Pointer Dereference, which allows the attacker to cause a denial of service via a crafted file.. EPSS estimates a 5.17% chance of exploitation in the next 30 days.

Description

asm/labels.c in Netwide Assembler (NASM) is prone to NULL Pointer Dereference, which allows the attacker to cause a denial of service via a crafted file.

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS Probability

5.17%

91.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions	Update
Nasm	Netwide Assembler	<= 2.13.03	—
Nasm	Netwide Assembler	2.14	Rc15
Nasm	Netwide Assembler	2.14.0	Rc1

References

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00015.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00017.htmlMailing List, Third Party Advisory
http://packetstormsecurity.com/files/152566/Netwide-Assembler-NASM-2.14rc15-Null-Pointer-Dereference.htmlExploit, Third Party Advisory, VDB Entry
https://bugzilla.nasm.us/show_bug.cgi?id=3392513Exploit, Issue Tracking, Third Party Advisory
https://fakhrizulkifli.github.io/CVE-2018-16517.htmlExploit, Third Party Advisory
https://www.exploit-db.com/exploits/46726/Exploit, Third Party Advisory, VDB Entry
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00015.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00017.htmlMailing List, Third Party Advisory
http://packetstormsecurity.com/files/152566/Netwide-Assembler-NASM-2.14rc15-Null-Pointer-Dereference.htmlExploit, Third Party Advisory, VDB Entry
https://bugzilla.nasm.us/show_bug.cgi?id=3392513Exploit, Issue Tracking, Third Party Advisory
https://fakhrizulkifli.github.io/CVE-2018-16517.htmlExploit, Third Party Advisory
https://www.exploit-db.com/exploits/46726/Exploit, Third Party Advisory, VDB Entry

Timeline

Published: Sep 6, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-16517?

asm/labels.c in Netwide Assembler (NASM) is prone to NULL Pointer Dereference, which allows the attacker to cause a denial of service via a crafted file.

How severe is CVE-2018-16517?

CVE-2018-16517 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 5.17% probability of exploitation in the next 30 days.

How do I fix CVE-2018-16517?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

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Source: NVD / NIST