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Fencer Vulns
high 7.5

CVE-2025-64344 json

Suricata is vulnerable to a stack overflow from unbounded stack allocation in LuaPushStringBuffer

published 2025-11-26 11 mo ago modified 2026-10-18 21 d ago also EUVD-2025-199771

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 31%
public exploits
0
none known

Summary

Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. Prior to versions 7.0.13 and 8.0.2, working with large buffers in Lua scripts can lead to a stack overflow. Users of Lua rules and output scripts may be affected when working with large buffers. This includes a rule passing a large buffer to a Lua script. This issue has been patched in versions 7.0.13 and 8.0.2. A workaround for this issue involves disabling Lua rules and output scripts, or making sure limits, such as stream.depth.reassembly and HTTP response body limits (response-body-limit), are set to less than half the stack size.

Patch / fix

  • oisf suricata 7.0.13, 8.0.2
  • openinfosecfoundation suricata 7.0.13, 8.0.2
  • suricata-ids suricata 7.0.13, 8.0.2
  • suricata Debian 13 1:7.0.10-1+deb13u2
  • suricata Debian 14 1:8.0.2-1

debian advisories DEBIAN-CVE-2025-64344

  • suricata openSUSE Tumbleweed 8.0.3-1.1

opensuse advisories openSUSE-SU-2026:10082-1

  • suricata Alpine 3.24 8.0.2-r0

alpine advisories ALPINE-CVE-2025-64344

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-64344 updated cvss 7.5

Suricata: Suricata: Stack overflow in Lua scripts due to large buffers

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
11 mo ago

Exploit prediction

0.38% chance of exploitation in the next 30 days, higher than 31% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

  • OISF suricata

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.