Security readout for executives and security teams
Plain-English summary
This issue lets someone with high local privileges on an affected Cisco TelePresence endpoint write files into the device's /root directory. It is not a remote takeover scenario from the supplied evidence, but unauthorized root-directory writes can undermine device integrity and should be addressed where these endpoints remain deployed.
Executive priority
Treat as a targeted integrity risk for legacy collaboration infrastructure. Prioritize validation if these devices support executive rooms, regulated communications, or third-party support access. It is not supported as an emergency internet-wide threat by the supplied evidence.
Technical view
CVE-2019-15962 is an improper permission assignment issue in the CLI of Cisco TelePresence Collaboration Endpoint Software. An authenticated local attacker logged in as the remotesupport user could write files to /root. CVSS v3.0 is 4.4 with local access, low complexity, high privileges, no user interaction, and high integrity impact.
Likely exposure
Exposure is most likely in environments still running affected Cisco TelePresence Collaboration Endpoint or TC Software devices, especially where remotesupport access exists or is poorly controlled. The source bundle does not provide exact fixed or affected version ranges.
Exploitation context
The supplied sources do not indicate active exploitation, and the CVE is not listed as KEV. Exploitation requires authenticated local access with the remotesupport user, which materially limits reach compared with unauthenticated network vulnerabilities.
Researcher notes
Key constraints are local attack vector and high required privileges. The main impact is integrity because improper permissions allow /root file writes. Evidence is incomplete for fixed versions in the supplied bundle, so rely on Cisco's advisory before declaring remediation complete.
Mitigation direction
- Review Cisco's advisory for affected and fixed software guidance.
- Upgrade affected endpoint software according to Cisco guidance.
- Restrict and audit remotesupport access on TelePresence endpoints.
- Prioritize endpoints reachable by untrusted administrators or support workflows.
Validation and detection
- Inventory Cisco TelePresence endpoints and record software versions.
- Compare discovered versions with Cisco's advisory guidance.
- Confirm whether remotesupport access is enabled and controlled.
- Review device integrity and change records for unexpected /root writes.
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-275: Exact CWE lookup
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Open ATT&CK lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2019-15962 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 4.4 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/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:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N0.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
4.4MediumVector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
Source materials
- CVE List V5 sourceCVE List V5
- 20191016 Cisco TelePresence Collaboration Endpoint Software Arbitrary File Write 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.
Permission Issues
Permission Issues represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.