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CVE-2017-17814

20
FAUCET Score

CVE-2017-17814 describes a use-after-free vulnerability in Netwide Assembler (NASM) version 2.14rc0, specifically within the do_directive function in asm/preproc.c, affecting various NASM and Ubuntu Linux distributions. This flaw carries a CVSSv3 score of 5.5 (Medium), indicating a local attack vector requiring user interaction, with the primary impact being a remote denial of service. While the vulnerability is not listed in CISA's KEV catalog and has no known public exploits or Metasploit/Nuclei modules, it has received minimal community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2.14CPE matchmatch criteria
cpe:2.3:a:nasm:netwide_assembler:2.14:rc0:*:*:*:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.5MEDIUM

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.19%
Probability of exploitation in next 30 days
EPSS Percentile
64.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0119 is in the 76th percentile among its peer group of 5,765 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (3)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: nasm
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: nasm
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: nasm

Vendor Advisories (1)

redhatCVE-2017-17814Low

nasm: use-after-free in do_directive function in asm/preproc.c

Dec 21, 2017

References

bugzilla.nasm.us / show_bug.cgi
ExploitIssue TrackingVendor Advisory
usn.ubuntu.com / 3694-1
Third Party Advisory