How severe is CVE-2025-64334?

CVE-2025-64334 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-64334 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-64334?

CVE-2025-64334 affects Oisf Suricata. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-64334?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-64334 have an EU (EUVD) identifier?

Yes. CVE-2025-64334 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-199777.

When was CVE-2025-64334 published?

CVE-2025-64334 was published on 2025-11-26 and last updated on 2026-06-17.

CVE-2025-64334

CVE-2025-64334 is a high-severity vulnerability in Oisf Suricata with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-770.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-199777
Weakness: CWE-770
Affected product: Oisf Suricata
Published: 2025-11-26
Last modified: 2026-06-17

Description

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, compressed HTTP data can lead to unbounded memory growth during decompression. This issue has been patched in version 8.0.2. A workaround involves disabling LZMA decompression or limiting response-body-limit size.

Frequently asked questions

What is CVE-2025-64334?: 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, compressed HTTP data can lead to unbounded memory growth during decompression. This issue has been patched in version 8.0.2. A workaround involves disabling LZMA decompression or limiting response-body-limit size.
How severe is CVE-2025-64334?: CVE-2025-64334 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-64334 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-64334?: CVE-2025-64334 affects Oisf Suricata. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-64334?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-64334 have an EU (EUVD) identifier?: Yes. CVE-2025-64334 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-199777.
When was CVE-2025-64334 published?: CVE-2025-64334 was published on 2025-11-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:oisf:suricata:*:*:*:*:*:*:*:*

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