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CVE-2018-15120

38
FAUCET Score

CVE-2018-15120 describes a denial-of-service vulnerability in libpango versions 1.40.8 through 1.42.3, affecting products like HexChat and various Canonical and GNOME distributions. An unauthenticated remote attacker can trigger an application crash or other unspecified impacts by sending crafted text containing invalid Unicode sequences. With a CVSS score of 6.5 (Medium), this vulnerability requires user interaction (UI:R) but has low attack complexity (AC:L) and can lead to high availability impact (A:H). While there is no evidence of active exploitation, a proof-of-concept exploit is publicly available on ExploitDB, though it has garnered minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.40.8, <= 1.42.3CPE matchmatch criteria
cpe:2.3:a:gnome:pango:*:*:*:*:*:*:*:*
18.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
11.50%
Probability of exploitation in next 30 days
EPSS Percentile
95.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-45263 · Aug 27, 2018
This CVE's current EPSS score of 0.1150 is in the 98th percentile among its peer group of 26,220 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 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

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2018-15120Moderate

pango: application crash triggered by unicode chars in pango-emoji.c

Aug 20, 2018

References

52.117.224.77 / xfce4-pdos.webm
ExploitThird Party Advisory
github.com / GNOME/pango/blob/1.42.4/NEWS
Release NotesThird Party Advisory
github.com / GNOME/pango/commit/71aaeaf020340412b8d012fe23a556c0420eda5f
PatchThird Party Advisory
i.redd.it / v7p4n2ptu0s11.jpg
Third Party Advisory
mail.gnome.org / archives/distributor-list/2018-August/msg00001.html
PatchThird Party Advisory
security.gentoo.org / glsa/201811-07
Third Party Advisory
usn.ubuntu.com / 3750-1
Third Party Advisory
exploit-db.com / exploits/45263
ExploitPatchThird Party AdvisoryVDB Entry
exploit-db.com / exploits/45263
ExploitPatchThird Party AdvisoryVDB Entry
ign.com / articles/2018/10/16/ps4s-are-reportedly-being-bricked-and-sony-is-working-on-a-fix
ExploitThird Party Advisory
reddit.com / r/PS4/comments/9o5efg/message_bricking_console_megathread
Third Party Advisory