Vulnerability · Published Nov 24, 2025 · Assigned by certcc
CVE-2025-12970CVE-2025-12970
High 8.8
In plain English
A high-severity security flaw in Fluent Bit from FluentBit. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 65% of all known vulnerabilities).
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)1.1%top 34.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| FluentBit | Fluent Bit | 0 – before 4.0.12 |