CVE-2021-43711: totolink ex200 Command Injection
CVSS: 9.8v3.1CriticalModified
Published 04-01-2022Last modified 04-08-2024
Vulnerability summary
CVE-2021-43711 is a critical (CVSS 9.8) Command Injection vulnerability in totolink ex200. EPSS estimates a 37.84% chance of exploitation in the next 30 days, higher than 98.5% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
9.8/10
010
Critical · v3.1 (NVD)EPSS score
37.84%
0%100%
High · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Timeline
- 04-01-2022PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
The downloadFlile.cgi binary file in TOTOLINK EX200 V4.0.3c.7646_B20201211 has a command injection vulnerability when receiving GET parameters. The parameter name can be constructed for unauthenticated command execution.
CVSS metrics
2 scores · 1 source · 2 versionsCritical 9.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesSingle source
High 7.5Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
37.84%
Chance of exploitation in the next 30 days
Percentile
99%
Versus all other CVEs
30-day change
0.00 pp
From 37.84% on 21-09-2026
21-09-202621-10-2026
EPSS score37.84%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundTotolink Ex200 Cmmand Execute
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Totolink1 product
- ex2004.0.3c.7646_b20201211
1 vendor · 1 product