CVE-2026-125709

MEDIUM 4.2

Libstdc++: overflow leaves streambuf in inconsistent state on i/o error.

CVSS Score

4.2

EPSS Score

0.0%

EPSS Percentile

0th

A flaw was found in libstdc++. When a byte-by-byte write operation fails during file stream processing, the library may still append data into the internal memory buffer. An attacker capable of inducing repeated write failures in an affected service can trigger a buffer overflow, potentially resulting in a Denial of Service (DoS) or memory corruption.

CWE	CWE-787
Vendor	red hat
Product	red hat enterprise linux 10
Published	Nov 10, 2026
Last Updated	Nov 10, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

Low

Affected Versions

Red Hat / Red Hat Enterprise Linux 10

All versions affected

Red Hat / Red Hat Enterprise Linux 10

All versions affected

Red Hat / Red Hat Enterprise Linux 10

All versions affected

Red Hat / Red Hat Enterprise Linux 10

All versions affected