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CVE-2018-19491

25
FAUCET Score

CVE-2018-19491 describes a buffer overflow vulnerability in Gnuplot 5.2.5, specifically within the post.trm component when the Postscript terminal is used. This flaw, caused by a missing size check in the "set font" function, allows an attacker to inject arbitrary data. Rated 7.8 HIGH, successful exploitation requires user interaction (UI:R) and local access (AV:L), potentially leading to high impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
5.2.5CPE matchmatch criteria
cpe:2.3:a:gnuplot:gnuplot:5.2.5:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
15.0CPE matchmatch criteria
cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.55%
Probability of exploitation in next 30 days
EPSS Percentile
72.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0155 is in the 71st percentile among its peer group of 11,616 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 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 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2018-19491

gnuplot: buffer overflow with an arbitrary amount of data in the PS_options

Nov 19, 2018

References

lists.opensuse.org / opensuse-security-announce/2019-04/msg00066.html
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2018/11/msg00031.html
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2018/11/msg00035.html
Mailing ListThird Party Advisory
sourceforge.net / p/gnuplot/bugs/2094
ExploitThird Party Advisory
sourceforge.net / p/gnuplot/gnuplot-main/ci/d5020716834582b20a5e12cdd49f39ee4f9dd949
PatchThird Party Advisory
usn.ubuntu.com / 4541-1