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NVD / CVE Program· CNA GitHub_M

CVE-2025-64335: Suricata is vulnerable to a null deref when used with base64_data

Noroxi assessment

Priority: Monitor (action score 30/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.44% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: OISF suricata 8.0.2.

Low priority for now. Upgrade to OISF suricata 8.0.2 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

HighCVSS 7.5 · v3.1—No exploit Fix available
Published
Nov 26, 2025
Updated
Oct 18, 2026
EPSS
0.4% · 38th percentile

Report tools

JSON

Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · GitHub_M
7.5
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2025-64335

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
oisfsuricata

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • oisf suricata8.0.0 and later · before 8.0.2

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

  • OISF suricata

    • >= 8.0.0, < 8.0.2affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:14suricatabefore 1:8.0.2-11:8.0.2-1
openSUSE:Tumbleweedsuricatabefore 8.0.3-1.18.0.3-1.1

Same product

oisf: all records

Other highest-scoring records for the same primary product.

  • CVE-2018-10244Suricata version 4.0.4 incorrectly handles the parsing of an EtherNet/IP PDU.
    40Plan
  • CVE-2026-22262Suricata datasets: stack overflow when saving a set
    39Monitor
  • CVE-2023-35853In Suricata before 6.0.13, an adversary who controls an external source of Lua rules may be able to execute Lua code.
    39Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2025-64333Nov 26, 2025 · Suricata is vulnerable to a stack overflow from big content-type
    30Monitor
  • ← EarlierCVE-2025-64334Nov 26, 2025 · Suricata is vulnerable to unbounded memory growth for decompression
    30Monitor
  • Later →CVE-2025-64344Nov 26, 2025 · Suricata is vulnerable to a stack overflow from unbounded stack allocation in LuaPushStringBuffer
    30Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
OISF suricata8.0.2 · descriptionVendor (CNA)
debian:suricata1:8.0.2-1 · Debian:14Package registry (OSV)
opensuse:suricata8.0.3-1.1 · openSUSE:TumbleweedPackage registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2025-5914856 days apartSuricata's improper use of entropy keyword can lead to a NULL-ptr deref
    30Monitor
  • CVE-2025-5915056 days apartSuricata: Keyword tls.subjectaltname can lead to NULL-ptr deref
    30Monitor
  • CVE-2026-31931127 days apartSuricata tls: null dereference in tls.alpn rule keyword
    30Monitor
  • CVE-2026-45747288 days apartSuricata lua/tls: null dereference in TlsGetCertInfo
    30Monitor
  • CVE-2024-38536503 days apartSuricata http/range: NULL-ptr deref when http.memcap is reached
    30Monitor
  • CVE-2026-57225296 days apartSuricata datasets: NULL pointer dereference in JSON/NDJSON dataset loading
    22Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-476 · NULL Pointer Dereference

CVSS vector

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

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (3 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records