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CVE-2018-16981

27
FAUCET Score

CVE-2018-16981 describes a heap-based buffer overflow in the stbi__out_gif_code function of stb_image.h version 2.19, affecting products like catimg and Emscripten, as well as Debian systems. With a CVSS score of 8.8 (HIGH), this vulnerability is remotely exploitable with low attack complexity, potentially leading to complete compromise of confidentiality, integrity, and availability if a user is tricked into interacting with a malicious file. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2.19CPE matchmatch criteria
cpe:2.3:a:nothings:stb_image.h:2.19:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.59%
Probability of exploitation in next 30 days
EPSS Percentile
73.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0159 is in the 72nd percentile among its peer group of 14,825 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2018-16981Moderate

stbi: Heap-based buffer overflow in stb_image.h:stbi__out_gif_code() function

Sep 12, 2018

References

github.com / nothings/stb/issues/656
ExploitIssue TrackingThird Party Advisory
lists.debian.org / debian-lts-announce/2023/01/msg00045.html
Mailing ListThird Party Advisory