Security readout for executives and security teams
Plain-English summary
Cisco Unified Contact Center Express had an input-validation flaw that could let a remote, unauthenticated attacker make the system process crafted web requests. The reported impact is unauthorized actions through server-side request forgery, with medium severity rather than confirmed system takeover.
Executive priority
Treat as a moderate-priority remediation item, elevated if Unified CCX is internet-accessible or supports critical contact-center operations. The source bundle does not support emergency prioritization based on active exploitation.
Technical view
The issue is an SSRF caused by improper validation of user-supplied input in Cisco Unified CCX request processing. CVSS v3.0 is 5.3: network reachable, low attack complexity, no privileges, no user interaction, unchanged scope, low integrity impact, and no stated confidentiality or availability impact.
Likely exposure
Exposure is most relevant where Cisco Unified Contact Center Express web functionality is reachable from untrusted networks. The source bundle does not identify exact affected versions, CPEs, deployment modes, or patch levels.
Exploitation context
The bundle does not show CISA KEV inclusion or cited evidence of active exploitation. It describes a remotely exploitable, unauthenticated SSRF condition, so exposed Unified CCX instances should still be prioritized for review.
Researcher notes
Evidence is limited to the CVE description, CVSS vector, CWE-20, and Cisco advisory reference. Affected versions are unspecified in the bundle, so version scoping and remediation details require the vendor advisory.
Mitigation direction
- Review the Cisco advisory for affected releases and vendor-provided fixed software or workarounds.
- Inventory Cisco Unified Contact Center Express deployments and confirm current software versions.
- Limit Unified CCX web access to trusted administrative and application networks where possible.
- Monitor vendor security guidance for version-specific remediation details.
Validation and detection
- Confirm whether any Cisco Unified Contact Center Express instances are deployed.
- Check each instance version against Cisco’s advisory and support guidance.
- Review external and internal exposure of Unified CCX web interfaces.
- Look for unusual Unified CCX web request activity in available logs.
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
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CWE-20: 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 lookupCloud metadata behavior lookup
The CVE wording references SSRF or metadata access, so cloud discovery and credential material review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2019-12633 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
- 5.3 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N3.91.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
5.3MediumVector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- 20190904 Cisco Unified Contact Center Express Request Processing Server-Side Request Forgery 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.
Improper Input Validation
Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.