CVE-2026-9980

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 ImpactpartialSuccessful exploitation gives limited 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

0.12% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 2.1% of scored records. A rank, not a probability.

NVD base score

5.0 (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:U/C:L/I:L/A:L

NVD analysis status

Analyzed. NVD last modified this record on 2026-07-21.

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

2026-05-28 22:25Z5 MO AGO

Last updated

2026-05-29 17:39Z5 MO AGO

Reserved

2026-05-28

Assigning CNA

Chrome

Record state

PUBLISHED

Severity

Medium (CVSS 5.0)

CNA CVSS vector

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

Weaknesses

• CWE-20Improper Input ValidationClass
• CWE-1286Improper Validation of Syntactic Correctness of InputBase

Data version

5.2

Document digest

a78de31c196a9e3bafdda59eaf41237f790a3e8d0fb0a982dfa04d118c2cc3db

• chromereleases.googleblog.comhttps://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html
• issues.chromium.orghttps://issues.chromium.org/issues/511776372