CVE-2024-27833Network attack vector

Arbitrary code execution via WebKit integer overflow

Published Jun 10, 2024 · Updated Apr 2, 2026

Integer overflow in WebKit in affected Apple operating systems and Safari allows remote attackers to execute arbitrary code. WebKit inadequately validates an integer operation while processing attacker-controlled web content; Apple has not disclosed the affected function or calculation. Exploitation requires a user or application to process malicious web content, and no sandbox escape or system-level execution is established.

CVSS severity8.8
High
EPSS probability0.82%
Next 30 days · Sep 17, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer overflow in WebKit in affected Apple operating systems and Safari allows remote attackers to execute arbitrary code. WebKit inadequately validates an integer operation while processing attacker-controlled web content; Apple has not disclosed the affected function or calculation. Exploitation requires a user or application to process malicious web content, and no sandbox escape or system-level execution is established.

The record

CVE
CVE-2024-27833
Published
Jun 10, 2024
Updated
Apr 2, 2026
Vendor
Apple
Product
iOS
Classifications
CWE-190, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 10, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 2, 2026Record 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=0 <16.7
  2. Affected versionversion=0 <17.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Apple · iOSversion=0 <16.7; version=0 <17.5
Apple · iOS and iPadOSversion=0 <16.7.8; version=0 <17.5
Apple · visionOSversion=0 <1.2
Apple · Safariversion=0 <17.5
Apple · tvOSversion=0 <17.5
Apple · iPadOSversion=0 <16.7; version=0 <17.5

Published CVSS scores

8.8NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-190Integer Overflow or Wraparound
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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