CVE-2014-6040: n/a vulnerability

CVE-2014-6040: GNU C Library (aka glibc) before 2.20 allows context-dependent attackers to cause a denial of service (out-...

GNU C Library (aka glibc) before 2.20 allows context-dependent attackers to cause a denial of service (out-of-bounds read and crash) via a multibyte character value of "0xffff" to the iconv function when converting (1) IBM933, (2) IBM935, (3) IBM937, (4) IBM939, or (5) IBM1364 encoded data to UTF-8.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 12:03 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2014-6040 is a crash bug in GNU glibc before 2.20. Systems may fail when software converts certain IBM multibyte character encodings to UTF-8 using iconv. The documented impact is denial of service, not code execution. Business urgency is highest where untrusted files, messages, or uploads are converted through these legacy encodings. Exposure is likely on Linux systems running glibc before 2.20 or unfixed vendor backports where applications convert untrusted IBM933, IBM935, IBM937, IBM939, or IBM1364 data to UTF-8 through iconv. Treat as a targeted stability risk, not an emergency internet-wide compromise signal. Prioritize systems that ingest external documents, email, uploads, or partner data in legacy IBM encodings and depend on continuous availability. Mitigation focus: Update glibc using the relevant Linux distribution security advisory.; Confirm vendor-fixed backports if glibc version remains below 2.20.; Review applications that process untrusted legacy IBM code-page data..

Prepared: Jun 14, 2026, 05:41 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Dec 5, 2014, 16:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

4Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Ba=commitdiff%3Bh=41488498b6CVE reference · x_refsource_CONFIRM
GLSA-201602-02CVE reference · vendor-advisory, x_refsource_GENTOO
https://sourceware.org/bugzilla/show_bug.cgi?id=17325CVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

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