How severe is CVE-2026-5873?

CVE-2026-5873 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-5873 being actively exploited?

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

What products are affected by CVE-2026-5873?

CVE-2026-5873 affects Google Chrome. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-5873?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-5873 have an EU (EUVD) identifier?

Yes. CVE-2026-5873 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-20678.

When was CVE-2026-5873 published?

CVE-2026-5873 was published on 2026-04-08 and last updated on 2026-06-17.

CVE-2026-5873

CVE-2026-5873 is a high-severity vulnerability in Google Chrome with a CVSS 3.x base score of 8.8. 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: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-20678
Weakness: CWE-125
Affected product: Google Chrome
Published: 2026-04-08
Last modified: 2026-06-17

Description

Out of bounds read and write in V8 in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)

Frequently asked questions

What is CVE-2026-5873?: Out of bounds read and write in V8 in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
How severe is CVE-2026-5873?: CVE-2026-5873 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-5873 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-5873?: CVE-2026-5873 affects Google Chrome. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-5873?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-5873 have an EU (EUVD) identifier?: Yes. CVE-2026-5873 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-20678.
When was CVE-2026-5873 published?: CVE-2026-5873 was published on 2026-04-08 and last updated on 2026-06-17.

References

Affected products (1)

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

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