CVE-2026-39199

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• 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

0.13% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 2.6% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Deferred. NVD last modified this record on 2026-06-22.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

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

2026-06-17 00:00Z2 MO AGO

Last updated

2026-06-17 18:10Z2 MO AGO

Reserved

2026-04-06

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Low (CVSS 2.9)

CNA CVSS vector

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

Weaknesses

• CWE-787Out-of-bounds WriteBase

Data version

5.2

Document digest

4f23fd07e9b28bdde7428aa331608bb9b2e1a37e3859737b2f5aa2695accf24e

• github.comhttps://github.com/snes9xgit/snes9x/issues/1035
• karansaini.comhttps://karansaini.com/snes9x-oob-write/
• github.comhttps://github.com/snes9xgit/snes9x/commit/96b366100172723f6314c40e237b370f4f7b59f4