CVE-2021-43663: totolink ex300_v2_firmware Command Injection
CVSS: 7.9v2.0HighModified
Published 30-03-2022Last modified 04-08-2024
Vulnerability summary
CVE-2021-43663 is a high (CVSS 7.9) Command Injection vulnerability in totolink ex300_v2_firmware. EPSS estimates a 0.96% chance of exploitation in the next 30 days, higher than 61% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
7.9/10
010
High · v2.0 (NVD)EPSS score
0.96%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Timeline
- 30-03-2022PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
totolink EX300_v2 V4.0.3c.140_B20210429 was discovered to contain a command injection vulnerability via the component cloudupdate_check.
CVSS metrics
2 scores · 1 source · 2 versionsHigh 7.5Preferred score · NVD (NIST)
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesSingle source
High 7.9Preferred score · NVD (NIST)
AV:A/AC:M/Au:N/C:C/I:C/A:CSourcesSingle source
EPSS trend
Probability
0.96%
Chance of exploitation in the next 30 days
Percentile
61%
Versus all other CVEs
30-day change
0.00 pp
From 0.96% on 21-09-2026
21-09-202621-10-2026
EPSS score0.96%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundIot Vuls
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Totolink1 product
- ex300_v2_firmware4.0.3c.140_b20210429
1 vendor · 1 product
References
1 links- github.com/chibataiki/iot-vuls/blob/main/totolink/command-injection1.mdX Refsource MISCExploitThird Party Advisory