Buffer overflow in Zyxel NWA1100-N firmware
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.
Summary
** UNSUPPORTED WHEN ASSIGNED ** A buffer overflow vulnerability in the formWep(), formWlAc(), formPasswordSetup(), formUpgradeCert(), and formDelcert() functions of the “webs” binary in Zyxel NWA1100-N customized firmware version 1.00(AACE.1)C0 could allow an attacker to trigger a denial-of-service (DoS) condition by sending a crafted HTTP request to a vulnerable device.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Zyxel | NWA1100-N firmware | 1.00(AACE.1)C0 | — | No fix listed | CNA |
- NWA1100-N firmware VendorZyxel Affected 1.00(AACE.1)C0 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-7287
- 2026-10-03 Alias added: GHSA-j38v-jpjg-hvr2
- 2026-10-25 Priority changed: MEDIUM → LOW
References
More Zyxel Nwa1100-n Firmware vulnerabilities
- TI-2015-06028 ZyXEL NWA1100-N, NWA1100-NH, NWA1121-NI, NWA1123-AC, and NWA1123-NI access points… CVSS 3.0MEDIUM 5.9
Sources
- CVE-2026-7287 · CVE Program
- CVE-2026-7287 · NVD
- FIRST EPSS
- GHSA-j38v-jpjg-hvr2 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences