CVE-2023-2203Network attack vector

Code execution via crafted web content use-after-free

Published May 17, 2023 · Updated Jan 22, 2025

Use-after-free in Red Hat WebKitGTK 2.38.5-1.el8 and 2.38.5-1.el9 allows remote authenticated users to execute code via crafted web content. Red Hat identifies improper validation and use-after-free memory handling during WebKit content processing but does not disclose the affected function or object lifetime. The affected state is confined to Red Hat's RHEL 8.8 and 9.2 package regression; exploitation can crash the renderer or run code in its context.

CVSS severity8.8
High
EPSS probability0.93%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Red Hat WebKitGTK 2.38.5-1.el8 and 2.38.5-1.el9 allows remote authenticated users to execute code via crafted web content. Red Hat identifies improper validation and use-after-free memory handling during WebKit content processing but does not disclose the affected function or object lifetime. The affected state is confined to Red Hat's RHEL 8.8 and 9.2 package regression; exploitation can crash the renderer or run code in its context.

The record

CVE
CVE-2023-2203
Published
May 17, 2023
Updated
Jan 22, 2025
Vendor
Red Hat
Product
WebKitGTK
Classifications
CWE-416, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 17, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 22, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Affects webkit2gtk3 v2.38.5-1.el8 and webkit2gtk3 v2.38.5-1.el9, Fixed in webkit2gtk3 v2.38.5-1.el8_8.3 and webkit2gtk3 v2.38.5-1.el9_2.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Red Hat · WebKitGTKversion=Affects webkit2gtk3 v2.38.5-1.el8 and webkit2gtk3 v2.38.5-1.el9, Fixed in webkit2gtk3 v2.38.5-1.el8_8.3 and webkit2gtk3 v2.38.5-1.el9_2.1

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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