CVE-2023-27932

Same-origin-policy bypass via improper state management

Published May 8, 2023 · Updated Jan 29, 2025

Origin validation error in WebKit across affected Apple platforms allows context-dependent attackers to bypass same-origin restrictions. WebKit improperly manages undisclosed browser state while processing crafted content; Apple has not identified the responsible function or transition. The attack requires affected WebKit to process attacker-controlled web content, and the resulting cross-origin capabilities are not publicly detailed.

CVSS severity5.5
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Origin validation error in WebKit across affected Apple platforms allows context-dependent attackers to bypass same-origin restrictions. WebKit improperly manages undisclosed browser state while processing crafted content; Apple has not identified the responsible function or transition. The attack requires affected WebKit to process attacker-controlled web content, and the resulting cross-origin capabilities are not publicly detailed.

The record

CVE
CVE-2023-27932
Published
May 8, 2023
Updated
Jan 29, 2025
Vendor
Apple
Product
iOS and iPadOS
Classifications
CWE-346, T1189
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 8, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 29, 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=unspecified <16.4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Apple · iOS and iPadOSversion=unspecified <16.4
Apple · Safariversion=unspecified <16.4
Apple · tvOSversion=unspecified <16.4
Apple · macOSversion=unspecified <13.3
Apple · watchOSversion=unspecified <9.4

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-346Origin Validation Error
T1189Drive-by Compromise

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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