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CVE-2023-5218

28
FAUCET Score

CVE-2023-5218 is a critical use-after-free vulnerability in Google Chrome, affecting versions prior to 118.0.5993.70, as well as various Debian and Fedora distributions. A remote attacker could exploit this flaw by crafting a malicious HTML page, leading to heap corruption and potentially arbitrary code execution. With a CVSS score of 8.8 (HIGH), it requires user interaction (UI:R) but has a low attack complexity (AC:L) and can result in high impact to confidentiality, integrity, and availability (C:H/I:H/A:H). There is currently no public exploit code available (Metasploit, Nuclei, ExploitDB: None), and it is not known to be actively exploited in the wild, nor is it on CISA's KEV catalog. Community discussion and media coverage are minimal, with only one mention and one article identified.

Impacted Technologies

VendorProductVersion(s)CPE
>= 118.0.5993.70, < 118.0.5993.70CPE match
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
< 118.0.5993.70CPE matchmatch criteria
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
11.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
12.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*
37CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*

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
1.26%
Probability of exploitation in next 30 days
EPSS Percentile
66.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0126 is in the 65th percentile among its peer group of 14,875 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

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

Remediation

Patch Available

Vendor Patches (2)

microsoftpatch availablevia msrc
Product: Microsoft Edge (Chromium-based)Fixed in: 118.0.2088.46
googlevendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

microsoft2023-Oct/CVE-2023-5218

Chromium: CVE-2023-5218 Use after free in Site Isolation

Oct 10, 2023

References

chromereleases.googleblog.com / 2023/10/stable-channel-update-for-desktop_10.html
Release NotesVendor Advisory
crbug.com / 1487110
Permissions Required
lists.fedoraproject.org / archives/list/[email protected]/message/F5QCMP6KKWPDZZLFU7YXSZDHEKOE7BXO
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/[email protected]/message/M4GHJ3FK5NPHDRUR4OJOI4UU6FKSOOGG
Mailing ListThird 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
debian.org / security/2023/dsa-5526
Third Party Advisory