CVE-2026-42500

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.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• 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

0.38% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 31.5% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Deferred. NVD last modified this record on 2026-07-22.

Red Hat severity

Moderate. 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

2026-05-29 18:36Z3 MO AGO

Last updated

2026-05-29 19:51Z3 MO AGO

Reserved

2026-04-28

Assigning CNA

Go

Record state

PUBLISHED

Severity

Medium (CVSS 5.3)

CNA CVSS vector

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

Weaknesses

• CWE-1285Improper Validation of Specified Index, Position, or Offset in InputBase

Data version

5.2

Document digest

c03531a89c5148428c5bb4c8f0cb502494563c0e977e620445367d1152a1ddf5

• go.devhttps://go.dev/issue/79576
• groups.google.comhttps://groups.google.com/g/golang-announce/c/uhYX90BlBvI
• go.devhttps://go.dev/cl/781500
• pkg.go.devhttps://pkg.go.dev/vuln/GO-2026-5031