Security readout for executives and security teams
Plain-English summary
This is a cross-site scripting issue in Fortinet FortiAuthenticator OWA Agent for Microsoft. An unauthenticated attacker could use crafted HTTP GET requests to make a user’s browser run attacker-controlled script. The expected business impact is limited confidentiality and integrity risk, not service outage.
Executive priority
Handle through normal vulnerability remediation with elevated priority for externally exposed OWA deployments. This is not presented as actively exploited, but it affects authentication-adjacent infrastructure and can support phishing, session abuse, or user-targeted compromise.
Technical view
CVE-2022-22304 is CWE-79 improper input neutralization during web page generation in FortiAuthenticator OWA Agent for Microsoft versions 2.2 and 2.1. CVSS 3.1 is 6.1, network exploitable, low complexity, no privileges required, user interaction required, changed scope, low confidentiality and integrity impact, no availability impact.
Likely exposure
Exposure appears limited to environments running FortiAuthenticator Agent for Microsoft OWA versions 2.2 or 2.1. The bundle does not show broader FortiAuthenticator product exposure. Internet-reachable OWA integrations and users with elevated mailbox or administrative access would increase practical business concern.
Exploitation context
The provided bundle does not show CISA KEV listing or cited evidence of active exploitation. The vulnerability is remotely reachable, but the CVSS vector requires user interaction. Do not treat this as known exploited based on the supplied evidence.
Researcher notes
Evidence is concise: affected product, versions, CWE-79, CVSS vector, and attack preconditions are available. The bundle does not provide patch version details, proof-of-concept status, exploit maturity, or mitigation specifics beyond the Fortinet advisory reference.
Mitigation direction
- Identify any FortiAuthenticator OWA Agent deployments and confirm exact versions.
- Review Fortinet advisory FG-IR-22-021 for vendor-approved remediation.
- Prioritize remediation for internet-facing or high-privilege OWA environments.
- Apply compensating controls to reduce untrusted access until vendor guidance is completed.
- Monitor web and authentication logs for unusual GET request patterns.
Validation and detection
- Confirm whether FortiAuthenticator OWA Agent version 2.1 or 2.2 is installed.
- Verify affected OWA agent endpoints are inventoried and ownership is assigned.
- After remediation, confirm the installed version is no longer listed as affected.
- Use non-destructive application testing to verify unsafe script reflection is not present.
- Check logs for suspicious requests during the pre-remediation exposure window.
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.
CVE-2022-22304 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
- 6.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:X/RL:X/RC:X
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:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:X/RL:X/RC:X2.82.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.1MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:X/RL:X/RC:X
Source materials
- CVE List V5 sourceCVE List V5
- https://fortiguard.com/psirt/FG-IR-22-021CVE reference · x_refsource_CONFIRM
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.