Immediate
Before a patch is released, reduce exposure immediately and only allow trusted sources to reach the affected service.
root@hackertop:~/vulnfeed/CVE-2026-33846#
CVE-2026-33846
MEDIUM
CVE
⚠ Unpatched · Zero-day◉ PoC 公开
Lifecycle 4/7
GnuTLS DTLS Handshake Fragment Reassembly merge_handshake_packet message_length length parameter
LIFECYCLE
6.4
CVSS
Vulnerability Description
A vulnerability was found in GnuTLS (Network Encryption Software) (the affected version is unknown). It has been declared as problematic. This vulnerability affects the function merge_handshake_packet of the component DTLS Handshake Fragment Reassembly Handler. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
Root Cause Analysis
The manipulation of the argument message_length with an unknown input leads to a unknown weakness. The CWE definition for the vulnerability is CWE-130. The product parses a formatted message or structure, but it does not handle or incorrectly handles a length field that is inconsistent with the actual length of the associated data.
Impact: As an impact it is known to affect availability.
Countermeasure: There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
Impact: As an impact it is known to affect availability.
Countermeasure: There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
Validation (PoC/EXP) - Looking for Contributors
No public PoC yet
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Mitigation Plan - Sorted by Priority
High
Enable extra access controls, WAF/ACL, or reverse-proxy rules for GnuTLS.
High
Use logs and IOCs to hunt through production traffic and confirm whether exploitation traces already exist.
Medium
Keep this issue on the watch list and follow vendor advisories, rollback notices, and new variants.
Vulnerability Lifecycle - Click each stage to inspect details
The issue has entered HackerTop VulnFeed and is now being tracked by the community.
The vulnerability has been synchronized into the platform and entered the visible triage flow.
Initial impact validation is complete based on current disclosure, technical details, and public intelligence.
A public proof path already exists for reference.
No in-the-wild exploitation has been confirmed yet, but monitoring should continue.
No vendor patch is available yet. Apply temporary mitigations first.
Reduce exposure, restrict access, and inspect logs until a permanent fix is available.
6.4
CVSS
Temp Score
6.4
MEDIUM
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Metric Details
Attack Vector
Attack Vector
Network
Attack Complexity
Attack Complexity
Low
Privileges Required
Privileges Required
None
User Interaction
User Interaction
None
Confidentiality Impact
Confidentiality Impact
High
Integrity Impact
Integrity Impact
High
Availability Impact
Availability Impact
High
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CVE-2026-33846 · CVSS 6.4 · Active Threat
