Grandstream Networks UCM6510 v1.0.20.52 and before is vulnerable to Improper Restriction…
Priority MEDIUM 62CWE-307Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-307.
Summary
Grandstream Networks UCM6510 v1.0.20.52 and before is vulnerable to Improper Restriction of Excessive Authentication Attempts. An attacker can perform an arbitrary number of authentication attempts using different passwords and eventually gain access to the targeted account using a brute force attack.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00304 23rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:grandstream:ucm6510_firmware:*:*:*:*:*:*:*:* | up to 1.0.20.52 | Vulnerable | Grandstream |
| cpe:2.3:h:grandstream:ucm6510:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Grandstream |
- cpe:2.3:o:grandstream:ucm6510_firmware:*:*:*:*:*:*:*:* Versions up to 1.0.20.52 Vulnerable ·Grandstream
- cpe:2.3:h:grandstream:ucm6510:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Grandstream
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-28172
- 2026-10-03 Alias added: GHSA-m4wf-gf4j-873f
References
More Grandstream Ucm6510 Firmware vulnerabilities
- TI-2025-20740 An issue in Grandstream UCM6510 v.1.0.20.52 and before allows a remote attacker to obtain… CVSS 3.1MEDIUM 6.5
Sources
- CVE-2025-28172 · CVE Program
- CVE-2025-28172 · NVD
- FIRST EPSS
- GHSA-m4wf-gf4j-873f · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences