CVE-2025-12443VulnerabilityPublished 10 Nov 2025

CVE-2025-12443: Google Chrome · Out of bounds read

Affects Google ChromeSource CVE Database V5

Not known to be exploited · CVSS 4.3 Medium : upgrade to 142.0.7444.59 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: 0.2% chance of exploitation in 30 days – higher than 13% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 142.0.7444.59

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 10 Nov 2025
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 Google Chrome to 142.0.7444.59.

Affected software

Product	Affected	Fixed in
Google Chrome	Affected =142.0.7444.59 <142.0.7444.59	Fixed in 142.0.7444.59

AI-suggested

To mitigate CVE-2025-12443, European organizations should prioritize updating all Chrome installations to version 142.0.7444.59 or later without delay. Enterprises should enforce automated patch management policies to ensure browsers remain current. Network-level controls can be implemented to restrict access to untrusted or suspicious websites, reducing exposure to crafted malicious HTML pages. Security teams should monitor web traffic for unusual patterns indicative of exploitation attempts targeting WebXR components. User awareness training should emphasize the risks of visiting unknown or untrusted websites, especially those offering WebXR content. For organizations deploying WebXR internally, validating and sanitizing WebXR content before distribution can reduce risk. Additionally, employing browser isolation technologies can limit the impact of potential exploits by sandboxing browser sessions. Regular vulnerability scanning and penetration testing focused on browser security can help identify residual risks.

Description

Out of bounds read in WebXR in Google Chrome prior to 142.0.7444.59 allowed a remote attacker to perform an out of bounds memory read via a crafted HTML page. (Chromium security severity: Medium)

Impact

For European organizations, the impact of CVE-2025-12443 centers on potential information disclosure and browser instability. Organizations using Chrome for WebXR-enabled applications, such as those in digital media, design, education, or virtual collaboration, may face increased risk if users access malicious content. Confidentiality could be compromised if sensitive data is exposed through memory leaks. Integrity might be affected if the out-of-bounds read leads to corrupted data processing or application crashes. Although no direct availability impact is expected, browser crashes could disrupt user productivity. The lack of known exploits reduces immediate risk, but the widespread use of Chrome in Europe means a large attack surface exists. Attackers could target high-value sectors such as finance, government, and critical infrastructure where WebXR or browser-based applications are in use. The threat also underscores the importance of secure web browsing practices and timely patch management.

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 10 Nov 2025, 20:26 UTC

Technical details

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