CVE-2026-33845: Gnutls: gnutls: denial of service via dtls zero-length fragment

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I. Basic Information for CVE-2026-33845

AIGC Shenlong Model
NVD (National Vulnerability Database)

Vulnerability Information

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Vulnerability Title

Gnutls: gnutls: denial of service via dtls zero-length fragment

Source: NVD (National Vulnerability Database)

Vulnerability Description

A flaw in GnuTLS DTLS handshake parsing allows malformed fragments with zero length and non-zero offset, leading to an integer underflow during reassembly and resulting in an out-of-bounds read. This issue is remotely exploitable and may cause information disclosure or denial of service.

Source: NVD (National Vulnerability Database)

CVSS Information

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

Source: NVD (National Vulnerability Database)

Vulnerability Type

整数下溢(超界折返)

Source: NVD (National Vulnerability Database)

Affected Products

Vendor	Product	Affected Versions	CPE
Red Hat	Red Hat Enterprise Linux 10	-	`cpe:/o:redhat:enterprise_linux:10`
Red Hat	Red Hat Enterprise Linux 6	-	`cpe:/o:redhat:enterprise_linux:6`
Red Hat	Red Hat Enterprise Linux 7	-	`cpe:/o:redhat:enterprise_linux:7`
Red Hat	Red Hat Enterprise Linux 8	-	`cpe:/o:redhat:enterprise_linux:8`
Red Hat	Red Hat Enterprise Linux 9	-	`cpe:/o:redhat:enterprise_linux:9`
Red Hat	Red Hat Hardened Images	-	`cpe:/a:redhat:hummingbird:1`
Red Hat	Red Hat OpenShift Container Platform 4	-	`cpe:/a:redhat:openshift:4`

II. Public POCs for CVE-2026-33845

#	POC Description	Source Link	Shenlong Link

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III. Intelligence Information for CVE-2026-33845

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https://access.redhat.com/security/cve/CVE-2026-33845vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2450624issue-trackingx_refsource_REDHAT
https://nvd.nist.gov/vuln/detail/CVE-2026-33845

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10

Same vendor: Red Hat

Same weakness: CWE-191

V. Comments for CVE-2026-33845

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I. Basic Information for CVE-2026-33845

Vulnerability Information

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Affected Products

II. Public POCs for CVE-2026-33845

III. Intelligence Information for CVE-2026-33845

IV. Related Vulnerabilities

V. Comments for CVE-2026-33845

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