Security readout for executives and security teams
Plain-English summary
This issue can expose sensitive files on Grandstream GXP1628 phones because directory listing is enabled. A person with low-level access over the network may browse directories that should not be visible. The main business risk is leakage of device data that could support later compromise or operational disruption.
Executive priority
Treat as a high-priority exposure issue for voice infrastructure. Prioritize internet-facing or broadly reachable phones first, then internal segments with shared-user access. Do not assume a patch exists from the provided sources; verify vendor guidance.
Technical view
CVE-2025-28170 is an incorrect access control flaw mapped to CWE-548. The CVSS 3.1 vector is AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L, score 7.6. Public metadata describes Grandstream GXP1628 firmware <=1.0.4.130 with directory listing enabled, exposing sensitive directories and files.
Likely exposure
Exposure is most likely where Grandstream GXP1628 devices running firmware <=1.0.4.130 have reachable web management surfaces. The CVE affected-product fields are incomplete, so confirm against device inventory and vendor identifiers rather than relying only on CPE matching.
Exploitation context
The bundle does not show CISA KEV listing or cited evidence of active exploitation. The vulnerability is network-accessible, low-complexity, and requires low privileges according to CVSS. Public disclosure includes a GitHub reference, but the provided evidence is limited.
Researcher notes
Public data is sparse. The CVE record states directory listing enabled and sensitive file exposure, but affected CPE data is absent and no vendor advisory is included in the bundle. Avoid over-scoping beyond GXP1628 <=1.0.4.130 without additional evidence.
Mitigation direction
- Identify all Grandstream GXP1628 devices and record firmware versions.
- Restrict phone management interfaces to trusted administrative networks only.
- Check Grandstream guidance for fixed firmware or supported configuration changes.
- Disable directory listing if a vendor-supported setting exists.
- Review exposed devices for sensitive files accessible through web directories.
Validation and detection
- Confirm whether any GXP1628 devices run firmware <=1.0.4.130.
- Verify management interfaces are not reachable from untrusted networks.
- Check device web configuration for directory listing behavior.
- Review logs for unusual directory browsing or file access patterns.
- Document any 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.
CWE-548: 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-2025-28170 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
- High
- CVSS
- 7.6 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L
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:L/UI:N/S:U/C:H/I:L/A:L2.84.7CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
7.6HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L
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/928ea6fd06d3b48c1c91cfdc30317d8dCVE 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.
Exposure of Information Through Directory Listing
Exposure of Information Through Directory Listing represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.