CVE-2021-43662: totolink a720r_firmware
CVSS: 6.5v3.1MediumModified
Published 30-03-2022Last modified 04-08-2024
Vulnerability summary
CVE-2021-43662 is a medium (CVSS 6.5) vulnerability in totolink a720r_firmware. EPSS estimates a 0.55% chance of exploitation in the next 30 days, higher than 45% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
6.5/10
010
Medium · v3.1 (NVD)EPSS score
0.55%
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, ver V4.0.3c.140_B20210429 and A720R ,ver V4.1.5cu.470_B20200911 have an issue which causes uncontrolled resource consumption.
CVSS metrics
2 scores · 1 source · 2 versionsMedium 6.5Preferred score · NVD (NIST)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesSingle source
Low 3.3Preferred score · NVD (NIST)
AV:A/AC:L/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
0.55%
Chance of exploitation in the next 30 days
Percentile
45%
Versus all other CVEs
30-day change
0.00 pp
From 0.55% on 21-09-2026
21-09-202621-10-2026
EPSS score0.55%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundIot Vuls
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Totolink2 products
- a720r_firmware4.1.5cu.470_b20200911
- ex300_v2_firmware4.0.3c.140_b20210429
1 vendor · 2 products