CVE-2020-14078: trendnet tew-827dru_firmware Out-of-bounds Write
Vulnerability summary
CVE-2020-14078 is a high (CVSS 8.8) Out-of-bounds Write vulnerability in trendnet tew-827dru_firmware. EPSS estimates a 1.78% chance of exploitation in the next 30 days, higher than 78.1% of scored vulnerabilities.
Timeline
- 15-06-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
TRENDnet TEW-827DRU devices through 2.06B04 contain a stack-based buffer overflow in the ssi binary. The overflow allows an authenticated user to execute arbitrary code by POSTing to apply.cgi via the action wifi_captive_portal_login with a sufficiently long REMOTE_ADDR key.
CVSS metrics
2 scores · 1 source · 2 versionsEPSS trend
Probability
1.78%
Chance of exploitation in the next 30 days
Percentile
78%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.78% on 22-09-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Trendnet1 product
- tew-827dru_firmware≤ 2.06b04
1 vendor · 1 product
References
2 links- github.com/kuc001/IoTFirmware/blob/master/Trendnet/TEW-827/wifi_captive_portal_login_overflow.pdfX Refsource MISCThird Party Advisory
- github.com/kuc001/IoTFirmware/blob/master/Trendnet/TEW-827/TRENDnet-wifi_captive.pdfX Refsource MISCThird Party Advisory