Cyber Resilience

CVE-2026-34253

HighUpdated

Published: 15 May 2026

Published
15 May 2026
Modified
30 June 2026
KEV Added
—
Patch
—
CVSS Score v3.1 8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
EPSS Score 0.0052 40.0th percentile
Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2026-34253 is a high-severity Buffer Underflow (CWE-124) vulnerability in Xiph (inferred from references). Its CVSS base score is 8.2 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Client Execution (T1203); ranked at the 40.0th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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…

more

can cause application crashes and potentially allow code execution.

CWE(s)
CWE-124

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1203 Exploitation for Client Execution Execution
Adversaries may exploit software vulnerabilities in client applications to execute code.
attack.mitre.org →
Why these techniques?

Buffer underflow enables arbitrary code execution via crafted input to client utility (ogg123), directly mapping to client-side exploitation.

Confidence: MEDIUM · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2025-62786Shared CWE-124
CVE-2025-27439Shared CWE-124
CVE-2025-53101Shared CWE-124
CVE-2023-25610Shared CWE-124
CVE-2026-0966Shared CWE-124
CVE-2025-27440Shared CWE-124

Affected Assets

Xiph
—
inferred from references and description; NVD did not file a CPE for this CVE

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References