CVE-2018-15120

Exp

libpango in Pango 1.40.8 through 1.42.3, as used in hexchat and other products, allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via crafted text with invalid Unicode sequences.

Published: 2018-08-24 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-15120 is rated High Exploit Risk (79.4/100): CVSS Medium severity, with high exploitation likelihood (EPSS 11.50%, 95th percentile). 5 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +5.89% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2018-15120

EDB-ID Source Kind Published Link
45263 exploit_db edb 2018-08-27 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2018-15120

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 5.61% 11.50% +5.89%
2 2026-05-29 6.07% 5.61% -0.46%
3 2026-02-09 — 6.07% —

Full EPSS history (20 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-15120

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 3.6 [email protected]
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2018-15120

OS Trackers for CVE-2018-15120

vendor priority summary link
debian low CVE-2018-15120 low priority: Debian including 1 source packages (pango1.0), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2018-15120
gentoo normal CVE-2018-15120: 1 GLSA(s) (201811-07), 1 atom(s) (x11-libs/pango); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2018-15120
redhat medium — https://access.redhat.com/security/cve/CVE-2018-15120
suse medium — https://www.suse.com/security/cve/CVE-2018-15120/
ubuntu medium CVE-2018-15120 medium priority: Ubuntu including 1 source packages (pango1.0), 4 status rows across 4 suites (bionic, trusty, upstream, xenial): released 2, DNE 1, not-affected 1. https://ubuntu.com/security/CVE-2018-15120

Affected software / configurations for CVE-2018-15120

Vendor Product Version Raw CPE
gnome pango >= 1.40.8, <= 1.42.3 cpe:2.3:a:gnome:pango:*:*:*:*:*:*:*:*
canonical ubuntu_linux 18.04 cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*

References for CVE-2018-15120

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