Security readout for executives and security teams
Plain-English summary
Some Grandstream GRP261x VoIP phones running firmware 1.0.3.6 Base can allow command injection through the administrative web interface with root-level impact. This is serious for exposed or poorly protected phone management interfaces, but the supplied sources do not confirm active exploitation or a vendor fix.
Executive priority
Treat this as high priority if affected phones are internet-accessible or reachable by many internal users. Root-level command injection on voice infrastructure can affect communications availability and network trust boundaries.
Technical view
CVE-2020-25217 is described as root command injection in the administrative web interface of Grandstream GRP261x firmware 1.0.3.6 Base. The source bundle maps the weakness conceptually to CWE-77, command injection. Authentication requirements, affected submodels, CVSS, and fixed versions are not provided in the supplied data.
Likely exposure
Exposure is most likely where GRP261x phone administrative web interfaces are reachable from untrusted networks or shared management segments. The bundle only names firmware 1.0.3.6 Base; broader version exposure is not evidenced here.
Exploitation context
The CVE is publicly disclosed and referenced by FireEye/Mandiant disclosure material. The source bundle marks KEV as false and provides no cited evidence of active exploitation in the wild.
Researcher notes
The supplied record is sparse: no CVSS, CPEs, detailed prerequisites, fixed version, or exploit status are included. Avoid assuming authentication state or affected versions beyond GRP261x firmware 1.0.3.6 Base unless confirmed by vendor or primary disclosure text.
Mitigation direction
- Identify Grandstream GRP261x devices running firmware 1.0.3.6 Base.
- Check Grandstream and referenced disclosure guidance for fixed firmware or official mitigations.
- Restrict administrative web access to trusted management networks only.
- Disable unnecessary remote administration where operationally possible.
- Review device logs for unexpected administrative activity.
Validation and detection
- Inventory VoIP phones by model and firmware version.
- Confirm whether administrative web interfaces are reachable from untrusted networks.
- Verify whether any device runs firmware 1.0.3.6 Base.
- Check vendor guidance before declaring a device remediated.
- Document compensating controls where no vendor fix is confirmed.
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.
Execution 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-2020-25217 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/fireeye/Vulnerability-Disclosures/blob/master/FEYE-2021-0001/FEYE-2021-0001.mdCVE reference · x_refsource_MISC
- https://cwe.mitre.org/data/definitions/77.htmlCVE 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.