CVE-2026-34253
CVE-2026-34253 is a high-severity vulnerability with a CVSS 3.x base score of 8.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-124.
Key facts
- Severity: High (CVSS 3.x base score 8.2)
- EPSS exploit prediction: 1% (40th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-30545
- Weakness: CWE-124
- Published:
- Last modified:
Description
A buffer underflow vulnerability has been identified in the ogg123 utility from the vorbis-tools 1.4.3 package in function remotethread in remote.c. This vulnerability occurs in the remote control functionality when processing malformed input, leading to a stack buffer underflow that can cause application crashes and potentially allow code execution.
Frequently asked questions
- What is CVE-2026-34253?
- A buffer underflow vulnerability has been identified in the ogg123 utility from the vorbis-tools 1.4.3 package in function remotethread in remote.c. This vulnerability occurs in the remote control functionality when processing malformed input, leading to a stack buffer underflow that can cause application crashes and potentially allow code execution.
- How severe is CVE-2026-34253?
- CVE-2026-34253 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability high.
- Is CVE-2026-34253 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-34253?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2026-34253 have an EU (EUVD) identifier?
- Yes. CVE-2026-34253 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30545.
- When was CVE-2026-34253 published?
- CVE-2026-34253 was published on 2026-05-15 and last updated on 2026-06-30.
References
- https://github.com/xiph/vorbis-tools/archive/refs/tags/v1.4.3.tar.gz
- https://github.com/xiph/vorbis-tools/blob/0b3fbf42eb3897d32f4a75baa2dc915a4ca45e8e/ogg123/remote.c#L153
- https://gitlab.xiph.org/xiph/vorbis-tools/-/work_items/2332
- https://access.redhat.com/security/cve/CVE-2026-34253
- https://bugzilla.redhat.com/show_bug.cgi?id=2477925
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34253.json
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