CVE-2021-45996: tendacn g1_firmware Out-of-bounds Write
Vulnerability summary
CVE-2021-45996 is a high (CVSS 7.8) Out-of-bounds Write vulnerability in tendacn g1_firmware. EPSS estimates a 1.18% chance of exploitation in the next 30 days, higher than 67.3% of scored vulnerabilities. 1 public exploit is recorded.
Timeline
- 04-02-2022PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
Tenda routers G1 and G3 v15.11.0.17(9502)_CN were discovered to contain a stack overflow in the function formSetPortMapping. This vulnerability allows attackers to cause a Denial of Service (DoS) via the portMappingServer, portMappingProtocol, portMappingWan, porMappingtInternal, and portMappingExternal parameters.
CVSS metrics
2 scores · 1 source · 2 versionsEPSS trend
Probability
1.18%
Chance of exploitation in the next 30 days
Percentile
67%
Versus all other CVEs
30-day change
0.00 pp
From 1.18% on 22-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundMy Vuln
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Tendacn2 products
- g1_firmware15.11.0.17\(9502\)_cn
- g3_firmware15.11.0.17\(9502\)_cn
1 vendor · 2 products