Tenda AC7, AC9, and AC10 Routers Command Injection Vulnerability
Tenda AC7, AC9, and AC10 devices contain a command injection vulnerability due to the "formsetUsbUnload" function executes a dosystemCmd function with untrusted input. Successful exploitation allows an attacker to execute OS commands via a crafted goform/setUsbUnload request.
- Vendor
- Tenda
- Product
- AC7, AC9, and AC10 Routers
- CVSS
- 9.8
- EPSS (exploit probability)
- 8.5%
- Status
- kev
- CISA patch-by (BOD 22-01)
- Added to KEV
Is CVE-2018-14558 being exploited?
Yes. CISA added CVE-2018-14558 to its Known Exploited Vulnerabilities catalog on . CISA only lists a CVE when it has reliable evidence of exploitation in the wild.
FIRST's EPSS model puts the probability of exploitation activity in the next 30 days at 8.5% (scored October 14, 2026).
- CISA KEV[ LISTED ]
- ENISA EUVD (exploited)[ — ]
- CIRCL KEV[ — ]
Catalog snapshot 2026-11-13. Full cross-catalog view: /kev-comparison
CVE-2018-14558 timeline
Every event links to its source. Catalog dates are each catalog's own; day offsets count from NVD publication. Data: JSON
What to do
CISA required actionApply updates per vendor instructions.
US federal civilian agencies must remediate by (181 days after listing) under BOD 22-01. Everyone else: that deadline is a sensible upper bound, not a target. Vendor guidance and the NVD record are linked under Source above.
Other Tenda CVEs we track
| CVE / Vulnerability | Severity | CVSS | EPSS | Added to KEV |
|---|---|---|---|---|
| CVE-2026-11405 Tenda router firmware undocumented authentication backdoorwrite-up | [ HIGH ] | — | 0.8% | — |
| CVE-2021-31755 Tenda AC11 Router Stack Buffer Overflow Vulnerability | [ CRITICAL ] | 9.8 | 86.5% | |
| CVE-2020-10987 Tenda AC1900 Router AC15 Model Remote Code Execution Vulnerability | [ CRITICAL ] | 9.8 | 79.8% |