CVE-2022-29638: totolink a3100r_firmware Out-of-bounds Write
CVSS: 7.8v2.0HighModified
Published 18-05-2022Last modified 03-08-2024
Vulnerability summary
CVE-2022-29638 is a high (CVSS 7.8) Out-of-bounds Write vulnerability in totolink a3100r_firmware. EPSS estimates a 1.18% chance of exploitation in the next 30 days, higher than 67.2% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
7.8/10
010
High · v2.0 (NVD)EPSS score
1.18%
0%100%
Low · +0.02 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Timeline
- 18-05-2022PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
TOTOLINK A3100R V4.1.2cu.5050_B20200504 and V4.1.2cu.5247_B20211129 were discovered to contain a stack overflow via the comment parameter in the function setIpQosRules. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted POST request.
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
High 7.8Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:CSourcesSingle source
EPSS trend
Probability
1.18%
Chance of exploitation in the next 30 days
Percentile
67%
Versus all other CVEs
30-day change
+0.02 pp
From 1.16% on 21-09-2026
21-09-202621-10-2026
EPSS score1.18%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundIot
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Totolink1 product
- a3100r_firmware4.1.2cu.5050_b20200504 | 4.1.2cu.5247_b20211129
1 vendor · 1 product
References
1 links- github.com/shijin0925/IOT/blob/master/TOTOLINK%20A3100R/2.mdX Refsource MISCExploitThird Party Advisory