Security readout for executives and security teams
Plain-English summary
CVE-2025-28171 affects Grandstream UCM6510 systems running firmware 1.0.20.52 and earlier. A remote unauthenticated attacker may obtain sensitive information through login-related functions. The public record rates this as medium severity, with limited confidentiality and integrity impact and no stated availability impact.
Executive priority
Treat as a near-term hardening item for exposed voice infrastructure. Prioritize any internet-facing UCM6510 systems because the CVSS vector requires no credentials or user interaction.
Technical view
The issue is described in the UCM6510 Login function at /cgi and /webrtccgi. CVSS 3.1 is 6.5, network-accessible, low complexity, no privileges, and no user interaction. The CVE maps to CWE-922, indicating sensitive information storage or handling weakness.
Likely exposure
Exposure is likely limited to organizations operating Grandstream UCM6510 devices on firmware 1.0.20.52 or earlier, especially where web login interfaces are reachable from the internet or untrusted networks.
Exploitation context
The source bundle does not show CISA KEV listing or confirmed active exploitation. A public researcher reference exists, but the provided evidence does not establish real-world exploitation volume or weaponization.
Researcher notes
The provided CVE data is sparse: affected CPEs are not populated, and no vendor advisory is included. Avoid assuming broader Grandstream product impact without vendor confirmation.
Mitigation direction
- Check Grandstream guidance for affected UCM6510 firmware and available fixes.
- Upgrade firmware if Grandstream provides a fixed release.
- Restrict /cgi and /webrtccgi access to trusted management networks.
- Remove internet exposure for PBX administrative and login interfaces.
- Rotate credentials if sensitive information exposure is suspected.
Validation and detection
- Inventory Grandstream UCM6510 devices and firmware versions.
- Confirm whether firmware is 1.0.20.52 or earlier.
- Review firewall and reverse proxy exposure for login paths.
- Check logs for unusual requests to /cgi and /webrtccgi.
- Document compensating controls if no vendor fix is available.
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-922: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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-2025-28171 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/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.
SSVC decision data
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N3.92.5CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://gist.github.com/Exek1el/a1fe4288f0df0a47068d618579c6b647CVE reference, mitre
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.
Insecure Storage of Sensitive Information
Insecure Storage of Sensitive Information represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.