CVE-2023-28204
CVE-2023-28204 is a medium-severity vulnerability in Apple Safari with a CVSS 3.x base score of 6.5. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2023-05-22). The underlying weakness is classified as CWE-125.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- EPSS exploit prediction: 14% (96th percentile)
- Actively exploited: Yes — listed in CISA KEV (added 2023-05-22)
- EU (EUVD) id: EUVD-2023-31912
- EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2023-05-22)
- Weakness: CWE-125
- Affected product: Apple Safari
- Published:
- Last modified:
Description
An out-of-bounds read was addressed with improved input validation. This issue is fixed in watchOS 9.5, tvOS 16.5, macOS Ventura 13.4, iOS 15.7.6 and iPadOS 15.7.6, Safari 16.5, iOS 16.5 and iPadOS 16.5. Processing web content may disclose sensitive information. Apple is aware of a report that this issue may have been actively exploited.
Frequently asked questions
- What is CVE-2023-28204?
- An out-of-bounds read was addressed with improved input validation. This issue is fixed in watchOS 9.5, tvOS 16.5, macOS Ventura 13.4, iOS 15.7.6 and iPadOS 15.7.6, Safari 16.5, iOS 16.5 and iPadOS 16.5. Processing web content may disclose sensitive information. Apple is aware of a report that this issue may have been actively exploited.
- How severe is CVE-2023-28204?
- CVE-2023-28204 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2023-28204 being actively exploited?
- Yes. CVE-2023-28204 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2023-05-22, which means active exploitation has been confirmed. It should be prioritised for remediation.
- What products are affected by CVE-2023-28204?
- CVE-2023-28204 primarily affects Apple Safari. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2023-28204?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
- Does CVE-2023-28204 have an EU (EUVD) identifier?
- Yes. CVE-2023-28204 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-31912. It is also flagged as exploited in the EUVD (since 2023-05-22).
- When was CVE-2023-28204 published?
- CVE-2023-28204 was published on 2023-06-23 and last updated on 2026-06-17.
References
- https://security.gentoo.org/glsa/202401-04
- https://support.apple.com/en-us/HT213757
- https://support.apple.com/en-us/HT213758
- https://support.apple.com/en-us/HT213761
- https://support.apple.com/en-us/HT213762
- https://support.apple.com/en-us/HT213764
- https://support.apple.com/en-us/HT213765
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-28204
Affected products (7)
- cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
- cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
- cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
- cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
- cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*
- cpe:2.3:a:webkitgtk:webkitgtk\+:*:*:*:*:*:*:*:*
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