CVE-2025-29477: An issue in fluent-bit v.3.7.2 allows a local attacker to cause a denial of service via the function consume_e

Routine

MEDIUM 5.5MITIGATE

CVE-2025-29477 is a medium-severity flaw (CVSS 5.5) affecting fluent bit. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue in fluent-bit v.3.7.2 allows a local attacker to cause a denial of service via the function consume_event.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	High
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.2% (top 92%)
CISA exploited list	No
Weakness	CWE-400
Published	2025-04-04
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: treasuredata

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-04-04 18:15 UTCPublished CVE record published
2026-06-17 09:05 UTCUpdated Record last modified

treasuredata fluent bit MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy fluent-bit || rpm -q fluent-bit || fluent-bit --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-29477?

fluent bit: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-29477 being exploited?

CVE-2025-29477 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-29477 affect?

CVE-2025-29477 affects fluent bit. Severity is medium (CVSS 5.5). An issue in fluent-bit v.3.7.2 allows a local attacker to cause a denial of service via the function consume_event.

How urgent is CVE-2025-29477?

Priority 26/100. Public exploit reference

Related CVEs

CVE-2025-12970 HIGH 8.8 DOWNGRADE The extract_name function in Fluent Bit in_docker input plugin copies container names into a fixed size stack
CVE-2025-12977 CRITICAL 9.1 DOWNGRADE Fluent Bit in_http, in_splunk, and in_elasticsearch input plugins fail to sanitize tag_key inputs
CVE-2025-12969 MEDIUM 6.5 DOWNGRADE Fluent Bit in_forward input plugin does not properly enforce the security.users authentication mechanism under
CVE-2025-12972 MEDIUM 5.3 DOWNGRADE Fluent Bit out_file plugin does not properly sanitize tag values when deriving output file names
CVE-2025-12978 MEDIUM 5.4 DOWNGRADE Fluent Bit in_http, in_splunk, and in_elasticsearch input plugins contain a flaw in the tag_key validation log

References

← Back to latest CVEs