Security readout for executives and security teams
Plain-English summary
Cisco video collaboration endpoints had a command injection flaw in the software upgrade process. An attacker who already has administrator access could send malformed requests and then alter configuration, disrupt the device, or reach the root filesystem. This is serious for exposed or weakly governed management interfaces, but the provided sources do not show unauthenticated compromise.
Executive priority
Treat as high priority where Cisco collaboration endpoints are managed over reachable networks or where admin credential hygiene is uncertain. The attacker needs administrator privileges, so urgency centers on privileged access control, management-plane exposure, and applying Cisco guidance.
Technical view
CVE-2020-3336 is CWE-78 command injection caused by insufficient input validation in Cisco TelePresence Collaboration Endpoint Software and Cisco RoomOS Software upgrade handling. The CVSS 3.0 score is 7.2, with network attack vector, low complexity, high privileges required, no user interaction, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most relevant to organizations running Cisco TelePresence CE or RoomOS devices where administrators can access console, SSH, or web API management paths. Risk increases if administrative credentials are shared, weak, compromised, or reachable from broad networks.
Exploitation context
The sources describe an authenticated remote attacker with administrative privileges sending malformed parameters through console, SSH, or web API. The source bundle marks KEV false and provides no evidence of active exploitation. No unauthenticated exploitation is supported by the provided evidence.
Researcher notes
Evidence supports command injection in the upgrade process with post-authentication administrative access required. The provided bundle does not include fixed version details or exploit telemetry beyond KEV being false, so remediation validation should anchor on Cisco's advisory and local device inventory.
Mitigation direction
- Review Cisco's advisory for fixed software and official upgrade guidance.
- Restrict console, SSH, and web API access to trusted administration networks.
- Audit and rotate administrative credentials for affected collaboration endpoints.
- Disable unnecessary remote management paths where operationally feasible.
- Monitor affected devices for unexpected configuration or upgrade activity.
Validation and detection
- Inventory Cisco TelePresence CE and RoomOS devices in use.
- Check installed software against Cisco advisory guidance.
- Verify management interfaces are not broadly reachable.
- Review administrative account usage for unusual access patterns.
- Confirm device configurations have not changed unexpectedly.
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-78: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. 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-2020-3336 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 7.2 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:H/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:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H1.25.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
7.2HighVector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- 20200617 Cisco TelePresence Collaboration Endpoint and RoomOS Software Command Injection 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.