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High 7.5Published Apr 30, 2026

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

Updated under an hour ago ()

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It affects Red Hat Enterprise Linux 10 and 16 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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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.

CVSS
7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE)
CWE-191
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
redhat
NVD analysis
Modified
Record last updated
Oct 14, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
from 0:3.8.10-4.el10_2 not affected
CNA record
from 0:3.8.9-9.el10_0.19 not affected
CNA record
from 0:3.3.29-9.el7_9.1 not affected
CNA record
from 0:3.6.14-10.el8_4.1 not affected
CNA record
from 0:3.6.14-10.el8_4.1 not affected
CNA record
from 0:3.6.16-7.el8_8.4 not affected
CNA record
from 0:3.6.16-7.el8_8.4 not affected
CNA record
from 0:3.8.3-6.el9_6.4 not affected
CNA record
from 412.86.202608241157-0 not affected
CNA record
from 1791371080 not affected
CNA record

References

References

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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