CVE-2021-35325: totolink a720r_firmware Out-of-bounds Write
CVSS: 7.5v3.1HighModified
Published 05-08-2021Last modified 04-08-2024
Vulnerability summary
CVE-2021-35325 is a high (CVSS 7.5) Out-of-bounds Write vulnerability in totolink a720r_firmware. EPSS estimates a 13.31% chance of exploitation in the next 30 days, higher than 96.3% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
7.5/10
010
High · v3.1 (NVD)EPSS score
13.31%
0%100%
Medium · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Timeline
- 05-08-2021PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
A stack overflow in the checkLoginUser function of TOTOLINK A720R A720R_Firmware v4.1.5cu.470_B20200911 allows attackers to cause a denial of service (DOS).
CVSS metrics
2 scores · 1 source · 2 versionsHigh 7.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesSingle source
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
13.31%
Chance of exploitation in the next 30 days
Percentile
96%
Versus all other CVEs
30-day change
0.00 pp
From 13.31% on 21-09-2026
21-09-202621-10-2026
EPSS score13.31%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundMy Cves
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Totolink1 product
- a720r_firmware4.1.5cu.470_b20200911
1 vendor · 1 product
References
1 links- github.com/hurricane618/my_cves/blob/master/router/totolink/A720R_cookie_overflow.mdX Refsource MISCExploitThird Party Advisory