Security readout for executives and security teams
Plain-English summary
CVE-2022-40103 is a reported buffer overflow in Tenda i9 firmware v1.0.0.8(3828). The known impact is denial of service, meaning a vulnerable device could be made unavailable. The record does not show data theft, privilege escalation, or confirmed active exploitation.
Executive priority
Treat this as a moderate availability risk for confirmed Tenda i9 deployments. Prioritize inventory and access restriction first; escalate if vulnerable devices support business-critical connectivity or management interfaces are broadly reachable.
Technical view
The flaw is described in formSetAutoPing and mapped to CWE-787, out-of-bounds write. CVSS 3.1 is 5.5 with availability impact only: AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H. Public sources do not name a vendor patch or supported mitigation.
Likely exposure
Exposure appears limited to organizations running the reported Tenda i9 firmware v1.0.0.8(3828), especially where device administration is accessible to untrusted users. The source data has incomplete structured affected-product metadata, so asset confirmation is important.
Exploitation context
The CVE is not listed as KEV, and the provided sources do not state active exploitation. Public detail indicates a crafted string can trigger denial of service, but the CVSS vector suggests local access and user interaction are part of the assessed scenario.
Researcher notes
Evidence is narrow: one public vulnerability write-up and CVE records. The structured affected-product fields are not populated, while the title and description name Tenda i9 v1.0.0.8(3828). Avoid assuming other models or firmware versions are affected without vendor confirmation.
Mitigation direction
- Identify any Tenda i9 devices and record exact firmware versions.
- Check Tenda or maintainer guidance for a fixed firmware release.
- Restrict management access to trusted administrative networks only.
- Replace or isolate devices if no supported fix is available.
- Monitor affected devices for unexpected crashes or availability loss.
Validation and detection
- Confirm whether any deployed devices run v1.0.0.8(3828).
- Review device management exposure and administrative access paths.
- Check vendor advisories for firmware or mitigation updates.
- Verify compensating controls limit untrusted access to management functions.
- Track KEV and CVE updates for exploitation or remediation changes.
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-787: 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-2022-40103 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
- 5.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
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 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:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H1.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/splashsc/IOT_Vulnerability_Discovery/blob/main/Tenda/Tenda_i9/buffer_overflow_formSetAutoPing.mdCVE 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.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.