Is CVE-2025-26977 in the CISA KEV catalog?

No. CVE-2025-26977 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-26977?

CVE-2025-26977 has a CVSS v3 base score of 3.8 (LOW).

What is the EPSS score for CVE-2025-26977?

CVE-2025-26977 has an EPSS score of 0.38% (30th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-26977?

Upgrade filebird to 6.4.6 or later.

CVE & CISA-KEV Catalog

CVE-2025-26977

LOW

3.8

CVSS v3

NVD

Description

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.

CWE-639Authorization Bypass Through User-Controlled Key

How to fix

Remediation Available

filebirdNVD

Affected:< 6.4.6Fixed in:6.4.6CVE-2025-26977derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredHigh

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N

Exploit Intelligence

0.38%probability of exploitation in 30 days

30thpercentile

Low risk: more likely to be exploited than 30% of all known CVEs.

References

Third-Party Advisory1

patchstack.com

Related Vulnerabilities

Other CWE-639 (Authorization Bypass Through User-Controlled Key) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-6875	Critical	9.8	90%	-	-
CVE-2024-46982	High	7.5	61%	-	Fix
CVE-2021-45428	Critical	9.8	57%	-	-
CVE-2019-17382	Critical	9.1	54%	-	Fix
CVE-2019-13360	Critical	9.8	24%	-	-
CVE-2023-48783	Medium	5.4	22%	-	Fix

Embed a live status badge for CVE-2025-26977

Markdown

[![CVE-2025-26977](https://tridentstack.com/cve/badge/CVE-2025-26977.svg)](https://tridentstack.com/cve/CVE-2025-26977)

HTML

<a href="https://tridentstack.com/cve/CVE-2025-26977"><img src="https://tridentstack.com/cve/badge/CVE-2025-26977.svg" alt="CVE-2025-26977"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-23.