Security readout for executives and security teams
Plain-English summary
Cisco SPA122 ATA with Router devices have a management-interface XSS flaw tied to DHCP service input handling. An attacker on an adjacent network could cause script execution in an administrator’s browser if the administrator is persuaded to open a crafted link. This is not rated critical, but it can expose browser-based information or support management-interface tampering.
Executive priority
Treat this as a moderate operational risk for sites still using Cisco SPA122 devices. It is not internet-remote based on the provided CVSS vector, but it can affect management sessions when local network trust boundaries are weak. Prioritize inventory, advisory review, and management-plane isolation.
Technical view
CVE-2019-12703 is CWE-79 cross-site scripting in the Cisco SPA122 web-based management interface. The issue stems from insufficient validation of user-supplied input received through DHCP-related handling. CVSS v3.0 is 5.2 with adjacent-network access, no privileges, low attack complexity, and required user interaction.
Likely exposure
Exposure is limited to Cisco SPA122 ATA with Router devices, especially where untrusted adjacent clients can interact with DHCP services and administrators access the web management interface from a browser. The source bundle does not specify exact affected firmware versions or deployment counts.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. Exploitation requires adjacent network position and administrator user interaction. Successful exploitation could execute script in the management-interface browser context or access sensitive browser-based information.
Researcher notes
Key uncertainty: the source bundle lists affected versions as unspecified and does not include fixed-release details. Avoid assuming exploit availability or patch status beyond Cisco’s advisory. Validation should focus on product presence, firmware comparison with vendor guidance, and adjacency between untrusted clients and the management/DHCP plane.
Mitigation direction
- Check Cisco’s advisory for affected software and official fixed-release guidance.
- Restrict management-interface access to trusted administrative networks only.
- Limit untrusted adjacent network access to device DHCP services where feasible.
- Use secure administrative browsing practices for router management interfaces.
- Prioritize replacement if the device is unsupported and no fix is available.
Validation and detection
- Inventory environments for Cisco SPA122 ATA with Router devices.
- Compare each device software version against Cisco’s advisory guidance.
- Confirm management interfaces are not reachable from untrusted network segments.
- Review network design for untrusted clients sharing adjacency with the device.
- Check whether administrators manage the device from hardened, trusted browsers.
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-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. 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-2019-12703 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.2 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:R/S:C/C:L/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:A/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N2.12.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
5.2MediumVector: CVSS:3.0/AV:A/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- 20191016 Cisco SPA122 ATA with Router Devices DHCP Services Cross-Site Scripting 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.