CVE-2026-3086

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

0.43% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 37.7% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-07-15.

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

2026-03-13 20:40Z7 MO AGO

Last updated

2026-07-15 01:09Z3 MO AGO

Reserved

2026-02-23

Assigning CNA

zdi

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weaknesses

• CWE-787Out-of-bounds WriteBase

Data version

5.2

Document digest

9f6c3fea699c49db3934c44ea9d9fa95c040fd8c3513a40c59379a2d972037cd

• www.zerodayinitiative.comZDI-26-170https://www.zerodayinitiative.com/advisories/ZDI-26-170/x_research-advisory
• gitlab.freedesktop.orgvendor-provided URLhttps://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/025d59cf3459c2903f0384b6b94bc3235e177b53vendor-advisory
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-3086vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2447493https://bugzilla.redhat.com/show_bug.cgi?id=2447493issue-trackingx_refsource_REDHAT
• security.access.redhat.comhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3086.jsonx_sadp-csaf-vex