Security readout for executives and security teams
Plain-English summary
CVE-2026-10187 is a critical flaw in Totolink N300RH firmware 6.1c.1353_B20190305. A remote attacker may be able to crash or take over the device through the web management interface. Public exploit material is reported, but the bundle does not show confirmed active exploitation.
Executive priority
Treat as urgent for any exposed affected router. The combination of unauthenticated remote attack surface, critical impact, and public exploit availability creates high business risk, even without confirmed active exploitation.
Technical view
The issue is a stack-based buffer overflow in wireless.so setWiFiBasicConfig, triggered by manipulation of the KeyStr argument in the Web Management Interface. The provided CVSS 2.0 score is 10.0 with network, low-complexity, unauthenticated impact to confidentiality, integrity, and availability.
Likely exposure
Exposure is most relevant for Totolink N300RH devices running firmware 6.1c.1353_B20190305 where the web management interface is reachable from the internet or untrusted networks.
Exploitation context
VulDB states the exploit is public and may be used. The source bundle marks KEV as false, and no cited source confirms active exploitation in the wild.
Researcher notes
Evidence identifies one affected firmware build and the vulnerable component/function/argument. The bundle does not provide a vendor fix, safe detection signature details, or confirmed exploitation telemetry, so validation should remain non-invasive and source-grounded.
Mitigation direction
- Check Totolink guidance and firmware availability for N300RH immediately.
- Disable internet exposure of the web management interface.
- Restrict management access to trusted admin networks or VPN only.
- Replace or retire affected devices if no fixed firmware is available.
- Monitor for unexpected configuration changes, crashes, or management logins.
Validation and detection
- Inventory Totolink N300RH devices and confirm firmware versions.
- Verify whether the web management interface is reachable externally.
- Review firewall, NAT, and remote-management settings for affected devices.
- Check vendor advisories before applying firmware or operational changes.
- Review logs for suspicious management access or device instability.
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-119: 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 lookupCWE-121: 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-2026-10187 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
- Critical
- CVSS
- 10 (2.0)
- Known Exploited
- No
- Published
Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:UR
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
4 official scoresWe 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.
AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:UR1010VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R3.95.9VulDBCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R3.95.9VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P——VulDBVulnerability scoring details
Base CVSS 4.0 score
9.3CriticalVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
Base CVSS 3.0 score
9.8CriticalVector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
Base CVSS 2.0 score
10CriticalVector: AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:UR
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- Source timelineVulDB
Advisory disclosed
- Source timelineVulDB
VulDB entry created
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- Source timelineVulDB
VulDB entry last update
- 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
- VDB-367468 | Totolink N300RH Web Management wireless.so setWiFiBasicConfig stack-based overflowCVE reference, VulDB · vdb-entry, technical-description
- VDB-367468 | CTI Indicators (IOB, IOC, IOA)CVE reference, VulDB · signature, permissions-required
- CVE-2026-10187 | CVE Analysis and ReportCVE reference, VulDB · third-party-advisory
- Submit #819971 | Totolink N300RHv4 V6.1c.1353_B20190305 stack-based buffer overflowCVE reference, VulDB · third-party-advisory
- Submit #820133 | Totolink N300RHv4 V6.1c.1353_B20190305 stack-based buffer overflow (Duplicate)CVE reference, VulDB · third-party-advisory
- https://wx.mail.qq.com/s?k=iXbjuHnfMwoD0oWW3vCVE reference, VulDB · exploit
- https://www.totolink.net/CVE reference, VulDB · product
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.
Improper Restriction of Operations within the Bounds of a Memory Buffer
Improper Restriction of Operations within the Bounds of a Memory Buffer represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
Stack-based Buffer Overflow
Stack-based Buffer Overflow represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.