SECUFOCUSNOW
Home›CVE index›CVE-2022-29641
Review reviewHigh

CVE-2022-29641

a3100r firmware, a3100r

TOTOLINK A3100R V4.1.2cu.5050_B20200504 and V4.1.2cu.5247_B20211129 were discovered to contain a stack overflow via the startTime and endTime parameters in the function setParentalRules. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted POST request.

CVSS
7.5
EPSS
1.16%
64.0% percentile
CISA KEV
Not listed
Published
2022.05.18
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability1.16%
Technical severityCVSS 7.5

Vulnerability overview

TOTOLINK A3100R V4.1.2cu.5050_B20200504 and V4.1.2cu.5247_B20211129 were discovered to contain a stack overflow via the startTime and endTime parameters in the function setParentalRules. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted POST request.

Affected product and versions

Product
a3100r firmware, a3100r
Affected versions
4.1.2cu.5050 b20200504, 4.1.2cu.5247 b20211129
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that a3100r firmware, a3100r and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
CWE-787
CVE-2022-29641 — a3100r firmware, a3100r | SECUFOCUS NOW