High 8.8Published Nov 24, 2025

CVE-2025-12970CVE-2025-12970

Updated under an hour ago (Oct 26, 2026, 1:50 PM ET)

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It affects FluentBit Fluent Bit and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for FluentBit Fluent Bit

Exploited in the last 30 days

The extract_name function in Fluent Bit in_docker input plugin copies container names into a fixed size stack buffer without validating length. An attacker who can create containers or control container names, can supply a long name that overflows the buffer, leading to process crash or arbitrary code execution.

CVSS: 8.8 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-121
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: certcc
NVD analysis: Modified
Record last updated: Jan 7, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

FluentBit Fluent Bit fluentbit:fluent_bit (from the name)	before 4.0.12	CNA record
treasuredata fluent_bit treasuredata:fluent_bit	4.1.0	NVD

References

References

https://fluentbit.io/blog/2025/10/28/security-vulnerabilities-addressed-in-fluent-bit-v4.1-and-backported-to-v4.0/
https://www.oligo.security/blog/critical-vulnerabilities-in-fluent-bit-expose-cloud-environments-to-remote-takeover

The CVE record on cve.org NVD's entry

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.