Security readout for executives and security teams
Plain-English summary
M-Files Client before 22.5.11356.0 had an authentication-protocol flaw that could let an already highly privileged user obtain other users' tokens for another resource. This is not a broad unauthenticated compromise, but it could expose sensitive access tokens where privileged accounts and affected client versions exist.
Executive priority
Treat this as a targeted privileged-user risk, not an internet-scale emergency. Prioritize confirming M-Files Client versions and updating affected clients, because token exposure could undermine access boundaries even without full system compromise.
Technical view
CVE-2022-4861 is an incorrect implementation of an authentication algorithm/protocol in M-Files Client before 22.5.11356.0. The CVSS 3.1 vector requires network access, high attack complexity, high privileges, and user interaction, with high confidentiality impact, low integrity impact, and no availability impact.
Likely exposure
Exposure is most likely in environments running M-Files Client versions before 22.5.11356.0, especially where highly privileged users operate the client. The source bundle does not identify affected server products or broader M-Files components.
Exploitation context
The CVE is not listed as KEV, and the provided sources do not state active exploitation. Exploitation appears constrained by high privileges, high complexity, and user interaction, but successful abuse could expose other users' tokens for another resource.
Researcher notes
Key details are limited in the source bundle. The vulnerability maps to CWE-303 and is described as authentication algorithm/protocol implementation error. The CVSS vector is AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:L/A:N. No exploit mechanics, indicators, or server-side affected scope are provided.
Mitigation direction
- Inventory deployed M-Files Client versions.
- Upgrade clients before 22.5.11356.0 to 22.5.11356.0 or later.
- Review the vendor advisory for exact remediation guidance.
- Limit highly privileged client use until affected versions are removed.
- Review privileged account hygiene and token exposure controls.
Validation and detection
- Confirm whether any endpoints run M-Files Client before 22.5.11356.0.
- Check which users have high privileges in affected deployments.
- Review vendor advisories for version-specific remediation details.
- Look for unusual token or cross-resource access involving privileged users.
- Document whether M-Files Client is present, absent, or already updated.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-303: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2022-4861 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 4.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:L/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:L/A:N0.54.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.8MediumVector: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.m-files.com/about/trust-center/security-advisories/cve-2022-4861/CVE reference
- https://product.m-files.com/security-advisories/cve-2022-4861/CVE reference · vendor-advisory
- https://empower.m-files.com/security-advisories/CVE-2022-4861CVE reference · vendor-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Incorrect Implementation of Authentication Algorithm
Incorrect Implementation of Authentication Algorithm represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.