Heap buffer overflow in PDF in Google Chrome prior to 118.0.5993.70 allowed a remote attacker who convinced a user to engage in specific us…

published 2023-10-11 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-57788

cvss: 8.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.9%; EPSS 0.9% chance of exploitation in 30 days, percentile 60%
public exploits: 0; none known

Heap buffer overflow in PDF in Google Chrome prior to 118.0.5993.70 allowed a remote attacker who convinced a user to engage in specific user interactions to potentially exploit heap corruption via a crafted PDF file. (Chromium security severity: Medium)

Patch / fix

fixed in 1 distros 3

google chrome 118.0.5993.70

debian opensuse alpine

chromium Debian 12 118.0.5993.70-1~deb12u1
chromium Debian 14, Debian 13 118.0.5993.70-1

debian advisories DEBIAN-CVE-2023-5474

chromium openSUSE Tumbleweed 118.0.5993.70-1.1
opera openSUSE Leap 15.5 NonFree 104.0.4944.23-lp155.3.15.1
opera openSUSE Leap 15.4 NonFree 104.0.4944.23-lp154.2.56.1
chromium Package Hub 15 SP5, Package Hub 15 SP4, openSUSE Leap 15.5 +1 more 118.0.5993.70-bp155.2.46.1

opensuse advisories openSUSE-SU-2024:13317-1 openSUSE-SU-2024:13335-1 openSUSE-SU-2023:0338-1 openSUSE-SU-2023:0337-1 openSUSE-SU-2023:0300-1

qt6-qtwebengine Alpine 3.24, Alpine 3.23, Alpine 3.22 +3 more 6.6.0-r1

alpine advisories ALPINE-CVE-2023-5474

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 18 mo ago (2025-04-23)

Exploit prediction

0.91% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

Google Chrome

Classification

Weakness

CWE-787 Out-of-bounds Write

Technology feeds

Google Chrome rss critical rss

References

chromereleases.googleblog.com /2023/10/stable-channel-update-for-desktop_10.html
release-notes, vendor-advisory
crbug.com /1483194
permissions-required
debian.org /security/2023/dsa-5526
third-party-advisory
security.gentoo.org /glsa/202311-11
third-party-advisory
security.gentoo.org /glsa/202312-07
third-party-advisory
security.gentoo.org /glsa/202401-34

Sources

CVE List CVE-2023-5474
NVD CVE-2023-5474

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary