High severity7.5NVD Advisory· Published Feb 4, 2022· Updated Jun 17, 2026

CVE-2021-44246

Description

Totolink devices A3100R v4.1.2cu.5050_B20200504, A830R v5.9c.4729_B20191112, and A720R v4.1.5cu.470_B20200911 were discovered to contain a stack overflow in the function setNoticeCfg. This vulnerability allows attackers to cause a Denial of Service (DoS) via the IpTo parameter.

Affected products

Totolink/A3100r Firmware
cpe:2.3:o:totolink:a3100r_firmware:4.1.2cu.5050_b20200504:*:*:*:*:*:*:*
Totolink/A720r Firmware
cpe:2.3:o:totolink:a720r_firmware:4.1.5cu.470_b20200911:*:*:*:*:*:*:*
Totolink/A830r Firmware
cpe:2.3:o:totolink:a830r_firmware:5.9c.4729_b20191112:*:*:*:*:*:*:*
Totolink/A3100Rcpe-rescue2 versions
(expand)+ 1 more
- (no CPE)
- (no CPE)range: v4.1.2cu.5050_B20200504
Totolink/A720Rllm-fuzzy
Range: v4.1.5cu.470_B20200911
Totolink/A830Rllm-fuzzy
Range: v5.9c.4729_B20191112

Patches

Vulnerability mechanics

References

github.com/pjqwudi/my_vuln/blob/main/totolink/vuln_2/2.mdnvdExploitThird Party Advisory

News mentions

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cvss	0.488
epss	0.001
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kev	0.000
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ransomware	0.000