Security readout for executives and security teams
Plain-English summary
This flaw lets a logged-in remote user read files from the operating system underneath Cisco Unified Communications systems. It does not allow file changes or service outage in the CVSS record, but exposed sensitive configuration or credential material could support later intrusion.
Executive priority
Treat this as a moderate-priority confidentiality risk for voice and collaboration infrastructure. Prioritize organizations with exposed management paths, weak account hygiene, or sensitive configuration data on affected systems.
Technical view
CVE-2022-20791 is an authenticated remote arbitrary file read issue caused by insufficient file permission restrictions in Cisco Unified CM, Unified CM SME, and Unified CM IM&P. Exploitation requires valid user credentials and uses a crafted API command. CVSS v3.1 is 6.5 with high confidentiality impact only.
Likely exposure
Organizations running affected Cisco Unified Communications Manager, Session Management Edition, or IM & Presence Service instances are the relevant exposure population. Internet or broadly reachable management/API access increases concern, but the source bundle does not provide affected version ranges.
Exploitation context
The source bundle says exploitation requires valid user credentials. CISA KEV status is false, and no provided source states active exploitation, so active exploitation should not be claimed from this evidence.
Researcher notes
Evidence supports authenticated arbitrary file read only. The bundle does not include affected version ranges, fixed release names, workarounds, or public exploit evidence. Validation should focus on product presence, release mapping through Cisco's advisory, and credentialed API exposure.
Mitigation direction
- Inventory Cisco Unified CM, SME, and IM&P deployments.
- Review Cisco's advisory for affected releases and fixed software guidance.
- Limit API and management access to trusted administrative networks.
- Audit user accounts with access to the affected application APIs.
- Disable or remove unnecessary user credentials where operationally possible.
Validation and detection
- Confirm whether deployed products match the Cisco products named in the CVE.
- Compare installed releases against Cisco's advisory before declaring exposure.
- Verify API access requires authentication and is not broadly reachable.
- Review administrative and API logs for unusual authenticated file-access behavior.
- Confirm remediation status after applying Cisco-directed updates or configuration changes.
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-36: 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 lookupDatabase behavior lookup
The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2022-20791 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
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/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:L/PR:L/UI:N/S:U/C:H/I:N/A:N2.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- 20220706 Cisco Unified Communications Products Arbitrary File Read VulnerabilityCVE reference · vendor-advisory, x_refsource_CISCO
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.
Absolute Path Traversal
Absolute Path Traversal represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.