Is CVE-2023-2203 being actively exploited?

CVE-2023-2203 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2023-2203?

CVE-2023-2203 has a CVSS 3.1 base score of 8.8 (HIGH).

CVE-2023-2203

HIGH · CVSS 8.8EPSS 0.9%EU EUVD

A flaw was found in the WebKitGTK package. An improper input validation issue may lead to a use-after-free vulnerability. This flaw allows attackers with network access to pass specially crafted web content files, causing a denial of service or arbitrary code execution. This CVE exists because of a CVE-2023-28205 security regression for the WebKitGTK package in Red Hat Enterprise Linux 8.8 and Red Hat Enterprise Linux 9.2.

Key facts

CVSS score: 8.8 (v3.1)
Severity: HIGH
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-416
EPSS score: 0.9% (60th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2023-33715)
Published: May 17, 2023
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2023-33715 in the EU Vulnerability Database. Last updated in EUVD on January 22, 2025.

View on the EU Vulnerability Database

Affected products

redhat / enterprise linux
redhat / enterprise linux
redhat / enterprise linux eus
redhat / enterprise linux eus
redhat / enterprise linux server aus
redhat / enterprise linux server aus
redhat / enterprise linux server tus
webkitgtk / webkit2gtk3
webkitgtk / webkit2gtk3

Certified products that may be affected

31 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.

Red Hat Enterprise Linux 8 NSS Cryptographic Module - Red Hat, Inc. - FIPS 140 5513 - active
Red Hat Enterprise Linux 8 Kernel Cryptographic API - Red Hat, LLC - FIPS 140 5461 - active
Red Hat Enterprise Linux 9 Kernel Cryptographic API - Red Hat, Inc. - FIPS 140 5445 - active
Red Hat Enterprise Linux 9 libgcrypt - Red Hat, Inc. - FIPS 140 5366 - active
Red Hat Enterprise Linux 8 Kernel Cryptographic API - Red Hat, Inc. - FIPS 140 5089 - active

See all 31 in the Security Certifications Explorer.

References

https://access.redhat.com/errata/RHSA-2023:2653(Third Party Advisory)
https://access.redhat.com/errata/RHSA-2023:3108(Third Party Advisory)
https://access.redhat.com/security/cve/CVE-2023-2203(Third Party Advisory)
https://bugzilla.redhat.com/show_bug.cgi?id=2188543(Issue Tracking, Third Party Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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