CVE-2025-46299VulnerabilityPublished 9 Jan 2026Updated 2 Apr 2026

CVE-2025-46299: Apple Safari · Processing maliciously crafted web content may disclose internal states of the app

Affects Apple SafariSource CVE Database V5

Not known to be exploited · CVSS 4.3 Medium : upgrade to 26.2 when convenient.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score

4.3Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.3% chance of exploitation in 30 days – higher than 23% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 26.2

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: Required
Scope: Unchanged
Confidentiality: Low
Integrity: None
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: Required: Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the impacted component.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 9 Jan 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Safari and iOS and iPadOS and macOS and tvOS and visionOS and watchOS to 26.2.

Affected software

Product	Affected	Fixed in
AppleSafari	Affected <26.2	Fixed in 26.2
AppleiOS and iPadOS	Affected <26.2	Fixed in 26.2
ApplemacOS	Affected <26.2	Fixed in 26.2
AppletvOS	Affected <26.2	Fixed in 26.2
ApplevisionOS	Affected <26.2	Fixed in 26.2
ApplewatchOS	Affected <26.2	Fixed in 26.2

AI-suggested

To mitigate CVE-2025-46299, organizations and users should promptly update Safari and all affected Apple operating systems to version 26.2 or later, where the memory initialization issue has been resolved. Enterprises should enforce patch management policies that include verification of Safari and OS versions on all Apple devices. Network security teams can implement web filtering to block access to suspicious or untrusted websites that might host maliciously crafted content. Employing endpoint protection solutions capable of detecting anomalous browser behavior may provide additional defense layers. User education is critical to reduce the risk of exploitation by discouraging clicking on unknown or suspicious links. For high-security environments, consider restricting Safari usage or deploying alternative browsers with robust security postures until patches are applied. Continuous monitoring for unusual information disclosure patterns or browser crashes can help identify exploitation attempts. Finally, coordinate with Apple support channels for any additional guidance or updates related to this vulnerability.

Description

A memory initialization issue was addressed with improved memory handling. This issue is fixed in Safari 26.2, iOS 26.2 and iPadOS 26.2, macOS Tahoe 26.2, tvOS 26.2, visionOS 26.2, watchOS 26.2. Processing maliciously crafted web content may disclose internal states of the app.

Impact

The primary impact of CVE-2025-46299 is the unauthorized disclosure of internal application states within Safari, which can lead to leakage of sensitive information about the browser's internal workings. While this does not directly compromise system integrity or availability, the exposed information could aid attackers in crafting more targeted exploits or bypassing security controls. Organizations relying heavily on Apple devices and Safari for web access could face increased risk of information leakage, potentially exposing user data or internal browser state details that facilitate further attacks. The vulnerability affects a broad range of Apple platforms, increasing the scope of affected systems globally. Although no active exploits are known, the ease of exploitation via malicious web content and the widespread use of Safari make this a relevant concern for enterprises, government agencies, and individual users. Failure to patch could result in reconnaissance advantages for attackers and potential privacy violations. The impact is particularly significant for environments where sensitive web browsing occurs, such as corporate networks, government institutions, and sectors handling confidential information.

CWE-284Improper Access Control (opens in a new tab)
Pillar weaknessCWE Top 25 (2025): #19OWASP Top 10 A01:2025: Broken Access Control (opens in a new tab)
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
MITRE discourages mapping vulnerabilities to this broad entry; the root cause is usually a more specific weakness.
Architecture and Design · Operation
Very carefully manage the setting, management, and handling of privileges. Explicitly manage trust zones in the software.
Architecture and Design · Separation of Privilege
Compartmentalize the system to have "safe" areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
OWASP Cheat Sheets
Docker Security (opens in a new tab)
Third Party Javascript Management (opens in a new tab)
Virtual Patching (opens in a new tab)
Authorization (opens in a new tab)
OWASP ASVS 4.0.3
V1.4.4 (opens in a new tab)
V1.4.5 (opens in a new tab)
V1.10.1 (opens in a new tab)
Attack patterns
Embedding Scripts within Scripts (opens in a new tab)
Modification of Windows Service Configuration (opens in a new tab)
Malicious Root Certificate (opens in a new tab)
Intent Spoof (opens in a new tab)
WebView Exposure (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 3 Apr 2026, 02:43 UTC

WeaknessesCWE-284

Technical details

References

Community reviews

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