CVE-2026-34253

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.
• 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

0.56% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 46.6% of scored records. A rank, not a probability.

NVD base score

8.2 (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:L/A:H

NVD analysis status

Deferred. NVD last modified this record on 2026-10-19.

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

2026-05-15 00:00Z5 MO AGO

Last updated

2026-07-15 01:04Z3 MO AGO

Reserved

2026-03-26

Assigning CNA

mitre

Record state

PUBLISHED

Severity

High (CVSS 8.2)

CNA CVSS vector

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

Weaknesses

• CWE-124Buffer Underwrite ('Buffer Underflow')Base

Data version

5.2

Document digest

1eb95e44424b116f9e65a7559b1a4c3b89a0bbd5dcce082998d3e654957aa5fc

• github.comhttps://github.com/xiph/vorbis-tools/blob/0b3fbf42eb3897d32f4a75baa2dc915a4ca45e8e/ogg123/remote.c#L153
• github.comhttps://github.com/xiph/vorbis-tools/archive/refs/tags/v1.4.3.tar.gz
• gitlab.xiph.orghttps://gitlab.xiph.org/xiph/vorbis-tools/-/work_items/2332
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-34253vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2477925https://bugzilla.redhat.com/show_bug.cgi?id=2477925issue-trackingx_refsource_REDHAT
• security.access.redhat.comhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34253.jsonx_sadp-csaf-vex