Priority reviewCritical

CVE-2021-46009

a3100r firmware, a3100r

In Totolink A3100R V5.9c.4577, multiple pages can be read by curl or Burp Suite without authentication. Additionally, admin configurations can be set without cookies.

CVSS
9.8
EPSS
12.2%
95.8% percentile
CISA KEV
Not listed
Published
2022.03.31
PRIORITY ASSESSMENT

Priority review

FIRST EPSS indicates an elevated probability of exploitation.

Known exploitationNot established by KEV
Exploit probability12.2%
Technical severityCVSS 9.8

Vulnerability overview

In Totolink A3100R V5.9c.4577, multiple pages can be read by curl or Burp Suite without authentication. Additionally, admin configurations can be set without cookies.

Affected product and versions

Product
a3100r firmware, a3100r
Affected versions
5.9c.4577
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:H/I:H/A:H
CWE
CWE-306
CVE-2021-46009 — a3100r firmware, a3100r | SECUFOCUS NOW