Security readout for executives and security teams
Plain-English summary
Cisco SPA100 Series analog telephone adapters can disclose their running configuration to a logged-in remote user through the web management interface. That configuration may contain sensitive operational details. Business urgency is moderate: exploitation requires authentication, but exposed or weakly controlled device administration could turn this into credential or telecom infrastructure leakage.
Executive priority
Treat as a moderate-priority infrastructure hygiene issue. Prioritize internet-facing, partner-accessible, or weakly administered ATA management interfaces because disclosed configurations may expose credentials or telephony network details.
Technical view
CVE-2019-15257 is a CWE-200 information disclosure issue in the Cisco SPA100 Series ATA web-based management interface. The bundle specifically lists Cisco SPA112 2-Port Phone Adapter, with versions unspecified. The flaw stems from improper restrictions on configuration information and can expose running configuration data to an authenticated remote attacker.
Likely exposure
Exposure is most likely where Cisco SPA112 or related SPA100 ATA management interfaces are reachable by untrusted networks or broadly shared admin accounts. Exact affected firmware versions are not provided in the source bundle.
Exploitation context
The provided sources do not support active exploitation, and the CVE is not marked KEV. Exploitation requires valid credentials and web management access. No unauthenticated or availability impact is described.
Researcher notes
The bundle gives CVSS 3.0 score 6.5 with high confidentiality impact, low complexity, and low privileges required. Public evidence is limited on versions, fixes, and exploitation. Avoid assuming affected models beyond the SPA100 context and listed SPA112 without checking Cisco guidance.
Mitigation direction
- Identify Cisco SPA112 and SPA100 Series ATA devices in use.
- Review Cisco advisory for affected versions and vendor-recommended fixed software.
- Restrict web management access to trusted administration networks only.
- Remove shared or unnecessary management accounts.
- Rotate exposed secrets if configuration disclosure is suspected.
Validation and detection
- Inventory ATA models and firmware against Cisco advisory details.
- Confirm web management is not reachable from untrusted networks.
- Review device access logs for unusual authenticated management activity.
- Check whether running configurations contain credentials or sensitive routing details.
- Document remediation status for each affected device.
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-200: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. 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-2019-15257 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.5 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/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:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N2.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
6.5MediumVector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- 20191016 Cisco SPA100 Series Analog Telephone Adapters Running Configuration Information Disclosure VulnerabilityCVE reference · vendor-advisory, x_refsource_CISCO
- https://www.tenable.com/security/research/tra-2019-44CVE reference · x_refsource_MISC
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.
Exposure of Sensitive Information to an Unauthorized Actor
Exposure of Sensitive Information to an Unauthorized Actor represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.