CVE-2025-64335

Suricata is vulnerable to a null deref when used with base64_data

7.5 HighFix available

Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. In versions from 8.0.0 to before 8.0.2, a NULL dereference can occur when the entropy keyword is used in conjunction with base64_data. This issue has been patched in version 8.0.2. A workaround involves disabling rules that use entropy in conjunction with base64_data.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

0.44%Up 0.4 points since Nov 27, 2025

What each source reports

CVE List Score used 7.5

Suricata is vulnerable to a null deref when used with base64_data

Record: CVE-2025-64335
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-476
Updated: 2026-11-02

EUVDEUVD-2025-199776 7.5

Record: EUVD-2025-199776
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

NVD 7.5

Record: CVE-2025-64335
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-476
Updated: 2026-11-02

OSVALPINE-CVE-2025-64335 7.5

Record: ALPINE-CVE-2025-64335
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-03

OSV 7.5

Suricata is vulnerable to a null deref when used with base64_data

Record: CVE-2025-64335
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-476
Updated: 2026-11-02

OSVDEBIAN-CVE-2025-64335 7.5

Record: DEBIAN-CVE-2025-64335
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2025-64335 7.5

Record: UBUNTU-CVE-2025-64335
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVopenSUSE-SU-2026:10082-1 No score

libsuricata8_0_3-8.0.3-1.1 on GA media

These are all security issues fixed in the libsuricata8_0_3-8.0.3-1.1 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2026:10082-1
Updated: 2026-11-02

Affected products

oisf suricata

Affected packages

Affected packages
Package	Affected	Fixed
`suricata` Alpine:v3.24	8.0.0 up to 8.0.2-r0	8.0.2-r0
`suricata` Debian:14	before 1:8.0.2-1, plus listed versions 1:7.0.10-11:7.0.11-11:7.0.11-1~bpo13+11:8.0.0-1~exp11:8.0.0-1~exp2 Show 7 moreShow less 1:8.0.0-1~exp41:8.0.0-1~exp51:8.0.1-11:8.0.1-21:8.0.1-31:8.0.1-3~bpo13+11:8.0.2-1~bpo13+1	1:8.0.2-1
`suricata` Ubuntu:16.04:LTS	All versions, plus listed versions 2.0.8-1build12.0.9-12.0.10-12.0.10-22.0.11-13.0-1	None known
`suricata` Ubuntu:18.04:LTS	All versions, plus listed versions 3.2-2ubuntu3	None known
`suricata` Ubuntu:22.04:LTS	All versions, plus listed versions 1:6.0.4-21:6.0.4-3	None known
`suricata` Ubuntu:24.04:LTS	All versions, plus listed versions 1:7.0.0-21:7.0.2-11:7.0.2-1build11:7.0.3-1build11:7.0.3-1build3	None known
`suricata` Ubuntu:25.10	All versions, plus listed versions 1:7.0.8-21:7.0.10-1	None known
`suricata` openSUSE:Tumbleweed From an advisory covering 14 CVEs	before 8.0.3-1.1	8.0.3-1.1

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	affected, aliases, references	OSV
Nov 2, 2026	first indexed	CVE List, EUVD, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-64335 is a high vulnerability (CVSS 7.5) in Oisf Suricata, published November 26, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.44%, the 38th percentile. Fixed in suricata 8.0.2-r0.

References

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