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CVE-2023-5855

24
FAUCET Score

CVE-2023-5855 is a use-after-free vulnerability in Google Chrome's Reading Mode, affecting versions prior to 119.0.6045.105, as well as various Debian and Fedora distributions. This high-severity flaw (CVSS 8.8) allows a remote attacker to potentially cause heap corruption and achieve high impact on confidentiality, integrity, and availability if a user is tricked into specific UI gestures. While no public exploit code or active exploitation has been confirmed, the vulnerability has garnered some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 119.0.6045.105, < 119.0.6045.105CPE match
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
< 119.0.6045.105CPE 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
1.00%
Probability of exploitation in next 30 days
EPSS Percentile
59.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0100 is in the 60th 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: 119.0.2151.44
googlevendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

microsoft2023-Nov/CVE-2023-5855

Chromium: CVE-2023-5855 Use after free in Reading Mode

Nov 14, 2023

References

chromereleases.googleblog.com / 2023/10/stable-channel-update-for-desktop_31.html
Release NotesVendor Advisory
crbug.com / 1492396
Permissions Required
lists.fedoraproject.org / archives/list/[email protected]/message/2MHLJRFWZNY6BFOW25Q4FEESVWZKS4C2
Mailing List
lists.fedoraproject.org / archives/list/[email protected]/message/EBA4KD5ZSV6XWWFLVR5UBYKKNOYMH33H
Mailing List
lists.fedoraproject.org / archives/list/[email protected]/message/PHWLT3M2AQDFD7RNAM3NJMYUC5KHMO5V
Mailing List
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-5546
Third Party Advisory