How severe is CVE-2025-9479?

CVE-2025-9479 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2025-9479 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-9479?

CVE-2025-9479 affects Google Chrome. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-9479?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-9479 have an EU (EUVD) identifier?

Yes. CVE-2025-9479 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-180545.

When was CVE-2025-9479 published?

CVE-2025-9479 was published on 2025-11-14 and last updated on 2026-06-17.

CVE-2025-9479

CVE-2025-9479 is a medium-severity vulnerability in Google Chrome with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-180545
Weakness: CWE-125
Affected product: Google Chrome
Published: 2025-11-14
Last modified: 2026-06-17

Description

Out of bounds read in V8 in Google Chrome prior to 133.0.6943.141 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: Medium)

Frequently asked questions

What is CVE-2025-9479?: Out of bounds read in V8 in Google Chrome prior to 133.0.6943.141 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: Medium)
How severe is CVE-2025-9479?: CVE-2025-9479 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2025-9479 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-9479?: CVE-2025-9479 affects Google Chrome. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-9479?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-9479 have an EU (EUVD) identifier?: Yes. CVE-2025-9479 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-180545.
When was CVE-2025-9479 published?: CVE-2025-9479 was published on 2025-11-14 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*

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