CVE-2025-26977: Authorization Bypass Through User-Controlled Key vulnerability in Ninja Team Filebird filebird allows Exploiti

Q: How do I fix CVE-2025-26977?

filebird: upgrade to 6.4.6. Exact commands for each OS are on this page.

Q: Is CVE-2025-26977 being exploited?

CVE-2025-26977 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-26977 affect?

CVE-2025-26977 affects filebird. Severity is low (CVSS 3.8). Authorization Bypass Through User-Controlled Key vulnerability in Ninja Team Filebird filebird allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Filebird: from n/a through <= 6.4.2.1.

Q: How urgent is CVE-2025-26977?

Priority 22/100. No elevated risk signals yet.

Routine

LOW 3.8UPGRADE

CVE-2025-26977 is a low-severity flaw (CVSS 3.8) affecting filebird. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Authorization Bypass Through User-Controlled Key vulnerability in Ninja Team Filebird filebird allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Filebird: from n/a through <= 6.4.2.1.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	3.8 (Low)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.4% (top 64%)
CISA exploited list	No
Weakness	CWE-639
Published	2025-02-25
Last modified	2026-06-17

Publisher (CNA): Patchstack · Vendor: ninjateam

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

Am I affected?

Timeline

2025-02-25 15:15 UTCPublished CVE record published
2026-06-17 09:02 UTCUpdated Record last modified

ninjateam filebird UPGRADE

Affected: < 6.4.6

Fixed in: 6.4.6

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy filebird || rpm -q filebird || filebird --version

2. UPGRADE to 6.4.6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade filebird

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade filebird

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2025-26977?

filebird: upgrade to 6.4.6. Exact commands for each OS are on this page.

Is CVE-2025-26977 being exploited?

CVE-2025-26977 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-2025-26977 affect?

CVE-2025-26977 affects filebird. Severity is low (CVSS 3.8). Authorization Bypass Through User-Controlled Key vulnerability in Ninja Team Filebird filebird allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Filebird: from n/a through <= 6.4.2.1.

How urgent is CVE-2025-26977?

Priority 22/100. No elevated risk signals yet.

Related CVEs

CVE-2024-53825 MEDIUM 4.7 UPGRADE Missing Authorization vulnerability in Ninja Team Filebird filebird allows Exploiting Incorrectly Configured A
CVE-2023-25966 MEDIUM 5.5 UPGRADE Missing Authorization vulnerability in Ninja Team Filebird allows Exploiting Incorrectly Configured Access Con

References

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