Security readout for executives and security teams
Plain-English summary
This issue affects Cisco Small Business SPA500 Series IP phones, with the provided affected record naming the SPA525G2. A person with physical access could abuse leftover development scripts through the phone’s local interface to run commands with elevated rights. This is not a remote internet-scale issue, but it matters for phones in public, shared, or poorly controlled spaces.
Executive priority
Treat this as a moderate, location-dependent risk. It should not outrank remotely exploitable perimeter flaws, but exposed or unsupported voice devices in shared spaces should be remediated or replaced during normal risk reduction work.
Technical view
CVE-2019-15959 is a local script execution flaw caused by development testing and verification scripts remaining on Cisco SPA500 Series IP Phones. The provided data describes physical attack vector, low privileges, no user interaction, unchanged scope, and high confidentiality, integrity, and availability impact. CVSS v3.0 score is 6.6.
Likely exposure
Exposure is most plausible where affected Cisco SPA525G2 or related SPA500 phones are still deployed and physically reachable by visitors, contractors, retail customers, shared-office users, or insiders. Remote-only exposure is not supported by the supplied sources.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation evidence. Exploitation requires physical proximity and access to the device’s local interface, which lowers broad-scale risk but raises concern for unmanaged branch offices and public-facing locations.
Researcher notes
The provided evidence supports local elevated command execution through retained development scripts. It does not provide fixed firmware versions, detailed affected-version ranges, or confirmed exploitation. Avoid assuming broader Cisco phone families beyond the cited SPA500 Series and affected SPA525G2 record.
Mitigation direction
- Inventory Cisco SPA525G2 and SPA500 Series phones still in service.
- Restrict physical access to affected phones and nearby USB interfaces.
- Review the Cisco advisory for vendor-supported fixes or retirement guidance.
- Prioritize replacement of unsupported or unpatchable phones in accessible locations.
- Monitor device configuration and behavior for unexpected local changes.
Validation and detection
- Compare phone inventory against Cisco SPA525G2 and SPA500 Series models.
- Confirm whether affected phones are in public or shared physical areas.
- Check current firmware and support status against Cisco guidance.
- Review local access controls for phone hardware and USB exposure.
- Document compensating controls where vendor fixes are unavailable.
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-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 lookupCVE-2019-15959 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
- 6.6 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H0.75.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
6.6MediumVector: CVSS:3.0/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- 20191106 Cisco Small Business SPA500 Series IP Phones Local Script Execution 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.