A flaw was found in m17n-lib. An attacker who supplies crafted input to an application processing ISO-2022 encoded text can cause the library to read uninitialized memory from the stack. If the application exposes or returns the decoded output, this flaw can result in unexpected behavior and limited information disclosure.

No CVSS v4.0

Attack Vector Local

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Red Hat Red Hat Enterprise Linux 10 affected —
Red Hat Red Hat Enterprise Linux 6 unknown —
Red Hat Red Hat Enterprise Linux 7 affected —
Red Hat Red Hat Enterprise Linux 8 affected —
Red Hat Red Hat Enterprise Linux 9 affected —

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://access.redhat.com/security/cve/CVE-2026-109854 cve-icon cve-icon
https://bugzilla.redhat.com/show_bug.cgi?id=2550285 cve-icon cve-icon
https://cgit.git.savannah.nongnu.org/cgit/m17n/m17n-lib.git/commit/?id=f3b85087f90189f91c04ba1b62c5f0b879ff2b20 cve-icon cve-icon
https://lists.gnu.org/archive/html/m17n-list/2026-10/msg00001.html cve-icon cve-icon
History

Tue, 13 Oct 2026 09:45:00 +0000

Type Values Removed Values Added
Description A flaw was found in m17n-lib. An attacker who supplies crafted input to an application processing ISO-2022 encoded text can cause the library to read uninitialized memory from the stack. If the application exposes or returns the decoded output, this flaw can result in unexpected behavior and limited information disclosure.
Title M17n-lib: uninitialized stack read in iso-2022 compound text utf-8 decoding
First Time appeared Redhat
Redhat enterprise Linux
Weaknesses CWE-457
CPEs cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
References
Metrics cvssV3_1

{'score': 2.5, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-10-13T09:16:55.162Z

Reserved: 2026-10-13T07:19:47.899Z

Link: CVE-2026-109854

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-13T10:17:15.610

Modified: 2026-10-13T10:17:15.610

Link: CVE-2026-109854

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-13T10:30:19Z

Weaknesses