CVE-2026-6311

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.27% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 19.5% of scored records. A rank, not a probability.

NVD base score

8.3 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-10-26.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-04-15 19:04Z6 MO AGO

Last updated

2026-05-27 16:55Z5 MO AGO

Reserved

2026-04-14

Assigning CNA

Chrome

Record state

PUBLISHED

Severity

High (CVSS 8.3)

CNA CVSS vector

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

Weaknesses

• CWE-457Use of Uninitialized VariableVariant
• CWE-824Access of Uninitialized PointerBase

Data version

5.2

Document digest

a3cde4f5b3f96d6437e001907452c6a4c6fe03c03649a79f2df4b081f950e283

• chromereleases.googleblog.comhttps://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop_15.html
• issues.chromium.orghttps://issues.chromium.org/issues/498201025