Security readout for executives and security teams
Plain-English summary
CVE-2026-1329 affects Tenda AX1803 firmware 1.0.0.1. A flaw in the guest Wi-Fi settings handler can overflow memory and potentially let an authenticated remote attacker take control of the device or disrupt it. Public exploit information is referenced, but the provided sources do not show confirmed active exploitation.
Executive priority
Treat this as urgent for any deployed Tenda AX1803 routers on firmware 1.0.0.1. The issue is critical, remotely reachable with authentication, and has public exploit information. Prioritize inventory, exposure reduction, credential hygiene, and vendor firmware checks.
Technical view
The issue is a stack-based buffer overflow in fromGetWifiGuestBasic within /goform/WifiGuestSet. Manipulation of guestWrlPwd, guestEn, guestSsid, hideSsid, or guestSecurity is reported to trigger CWE-119/CWE-121 conditions. VulDB lists CVSS 2.0 score 9.0 with AV:N/AC:L/Au:S/C:C/I:C/A:C and proof-of-concept exploit maturity.
Likely exposure
Exposure is limited to Tenda AX1803 devices running firmware 1.0.0.1 where the web configuration interface is reachable by an attacker with required authentication. Risk increases if router administration is exposed beyond trusted networks or credentials are weak or shared.
Exploitation context
The sources state the attack can be launched remotely and that exploit material has been published. The CVSS vector indicates single authentication is required. CISA KEV status is not provided as positive, and no cited source confirms active exploitation in the wild.
Researcher notes
Evidence is strongest from VulDB and CVE records; vendor remediation details were not included in the provided sources. The public Notion reference is tagged as exploit material, so handle carefully. Do not assume unauthenticated exploitation because the provided CVSS vector lists Au:S.
Mitigation direction
- Identify Tenda AX1803 devices and confirm firmware version.
- Check Tenda’s site for updated firmware or official guidance.
- Restrict router management access to trusted administrative networks.
- Disable remote administration if enabled and not required.
- Rotate administrative credentials and remove shared or default passwords.
- Monitor affected routers for crashes, reboots, or unexpected configuration changes.
Validation and detection
- Inventory network devices for Tenda AX1803 models.
- Verify whether firmware version is 1.0.0.1.
- Confirm management interfaces are not internet-exposed.
- Review access controls for router administration paths.
- Check vendor advisories or firmware downloads for remediation.
- Correlate logs for unexpected guest Wi-Fi setting 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-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-2026-1329 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
- 9 (2.0)
- Known Exploited
- No
- Published
Vector: AV:N/AC:L/Au:S/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.
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.
AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR810Primary CVE scoreVulnerability scoring details
Base CVSS 2.0 score
9CriticalVector: AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR
Source materials
- CVE List V5 sourceCVE List V5
- VDB-342305 | Tenda AX1803 WifiGuestSet fromGetWifiGuestBasic stack-based overflowCVE reference · vdb-entry, technical-description
- VDB-342305 | CTI Indicators (IOB, IOC, IOA)CVE reference · signature, permissions-required
- Submit #736063 | Tenda AX1803 V1.0.0.1 Stack-based Buffer OverflowCVE reference · third-party-advisory
- Submit #736064 | Tenda AX1803 V1.0.0.1 Stack-based Buffer Overflow (Duplicate)CVE reference · third-party-advisory
- Submit #736065 | Tenda AX1803 V1.0.0.1 Stack-based Buffer Overflow (Duplicate)CVE reference · third-party-advisory
- Submit #736066 | Tenda AX1803 V1.0.0.1 Stack-based Buffer Overflow (Duplicate)CVE reference · third-party-advisory
- Submit #736067 | Tenda AX1803 V1.0.0.1 Stack-based Buffer Overflow (Duplicate)CVE reference · third-party-advisory
- https://river-brow-763.notion.site/Tenda-AX1803-Buffer-Overflow-in-fromGetWifiGusetBasic-2e3a595a7aef80a78225db34317daa40#2e3a595a7aef801ab517e4af5631227aCVE reference · exploit
- https://www.tenda.com.cn/CVE reference · 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.