Security readout for executives and security teams
Plain-English summary
CVE-2023-50986 is a high-severity buffer overflow in the Tenda i29 v1.0 V1.0.0.5 sysLogin function. A crafted time parameter can corrupt memory. Business risk is highest where these devices are reachable from untrusted local or wireless networks.
Executive priority
Treat as a near-term remediation item for any deployed Tenda i29 devices. Prioritize sites where device administration is reachable from shared office, guest, or wireless networks.
Technical view
The CVE describes CWE-120 and CWE-787 memory corruption in sysLogin through the time parameter. CVSS 3.1 is 8.8 with adjacent-network access, low complexity, no privileges, and no user interaction, with high confidentiality, integrity, and availability impact.
Likely exposure
Exposure appears limited to Tenda i29 v1.0 V1.0.0.5 devices. The CVE affected-product metadata is incomplete and lists vendor/product/version as n/a, so asset validation is required.
Exploitation context
The provided CVE bundle does not show CISA KEV listing or active exploitation. A public GitHub reference is cited, indicating public technical disclosure, but the bundle does not prove exploitation in the wild.
Researcher notes
Do not assume internet-reachable exploitation from the CVSS vector; AV:A indicates adjacent network access. The public record names the vulnerable function and parameter, but affected CPE metadata is absent, reducing asset-matching confidence.
Mitigation direction
- Identify any Tenda i29 v1.0 V1.0.0.5 devices in the environment.
- Check Tenda or device supplier guidance for firmware updates or mitigations.
- Restrict device login interfaces to trusted admin networks only.
- Segment or retire devices if vendor remediation is unavailable.
- Monitor local network access to affected management interfaces.
Validation and detection
- Confirm device model and firmware version from asset records or management UI.
- Verify sysLogin exposure is limited to trusted adjacent networks.
- Review firewall, VLAN, and wireless segmentation rules around the device.
- Check vendor advisories for any newer fixed firmware.
- Review logs for unusual login attempts or crashes.
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-120: 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-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-2023-50986 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
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/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.
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:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H2.85.9CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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://github.com/ef4tless/vuln/blob/master/iot/i29/sysLogin.mdCVE 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.
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
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.