Security readout for executives and security teams
Plain-English summary
Cisco SPA100 analog phone adapters can be taken over by someone already authenticated to the device’s web management interface from a nearby network segment. Because the management interface is enabled by default, exposed devices may give an attacker elevated control over voice-adapter infrastructure.
Executive priority
Treat this as high priority for environments still using affected Cisco phone adapters, especially in branch or voice networks. The issue can lead to privileged code execution, but the documented preconditions reduce urgency compared with unauthenticated internet-facing RCE.
Technical view
CVE-2019-15245 is an improper input validation issue in the web-based management interface of Cisco SPA100 Series ATAs. An authenticated adjacent attacker can send crafted requests and execute arbitrary code with elevated privileges. The CVSS v3.0 score is 8.0, with low attack complexity and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most likely where Cisco SPA112 or Cisco SPA100 Series ATAs are still deployed and reachable from user, voice, or adjacent network segments. Internet exposure is not stated in the sources; the documented attack vector is adjacent network access with authentication.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation evidence. Exploitation requires authentication to the web management interface and adjacent network access. The interface is enabled by default, increasing risk if credentials or network segmentation are weak.
Researcher notes
The available evidence identifies improper validation of user-supplied input in the web management interface and maps to CWE-119. The bundle lists Cisco SPA112 specifically while the advisory title covers SPA100 Series ATAs. Version and fixed-release details are not provided in the bundle.
Mitigation direction
- Check Cisco’s advisory for fixed firmware, official workarounds, and support status.
- Inventory Cisco SPA112 and SPA100 Series ATAs in voice and branch networks.
- Restrict web management access to trusted administrative networks where feasible.
- Review and harden device administrator credentials.
- Retire or isolate devices that cannot be updated per Cisco guidance.
Validation and detection
- Confirm whether Cisco SPA112 or SPA100 Series ATAs are present.
- Verify web-based management interface exposure and default-enabled status.
- Check firmware and configuration against Cisco’s advisory guidance.
- Review access controls for management from adjacent network segments.
- Look for unexpected administrative access to affected ATA devices.
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-119: 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2019-15245 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
- High
- CVSS
- 8 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:A/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:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H2.15.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
8HighVector: CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- 20191016 Cisco SPA100 Series Analog Telephone Adapters Remote Code Execution VulnerabilitiesCVE 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 Restriction of Operations within the Bounds of a Memory Buffer
Improper Restriction of Operations within the Bounds of a Memory Buffer represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.