What is CVE-2024-34257?

CVE-2024-34257 is a critical-severity vulnerability in Totolink Ex1800t, classified under Improper Authorization. CVSS score: 9.8/10. Published 2024-05-08.

How severe is CVE-2024-34257?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2024-34257 known to be exploited?

4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Totolink Ex1800t

CVE-2024-34257

TOTOLINK EX1800T V9.1.0cu.2112_B20220316 has a vulnerability in the apcliEncrypType parameter that allows unauthorized execution of arbitrary commands, allowing an attacker to obtain device administrator privileges.

Published 2024-05-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.038 (89.7th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 89.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.038 · newest: 0.038 · change: 0.000

Affected products

Totolink Ex1800t
Totolink Ex1800t Firmware — versions 9.1.0cu.2112_b20220316

Weakness classification (CWE)

CWE-285 — Improper Authorization

Public proof-of-concept exploits

References

immense-mirror-b42.notion.site/TOTOLINK-EX1800T-has-an-unauthorized-arbitrary-c… (Broken Link)
github.com/ZackSecurity/VulnerReport/blob/cve/totolink/EX1800T/1.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2024-34257?: CVE-2024-34257 is a critical-severity vulnerability in Totolink Ex1800t, classified under Improper Authorization. CVSS score: 9.8/10. Published 2024-05-08.
How severe is CVE-2024-34257?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2024-34257 known to be exploited?: 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.