What is CVE-2023-46977?

CVE-2023-46977 is a critical-severity vulnerability in Totolink Lr1200gb, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2023-10-31.

How severe is CVE-2023-46977?

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

Buffer overflow in Totolink Lr1200gb

CVE-2023-46977

TOTOLINK LR1200GB V9.1.0u.6619_B20230130 was discovered to contain a stack overflow via the password parameter in the function loginAuth.

Vulnerability class: Buffer Overflow

Published 2023-10-31 · 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: 0.087 (94.9th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 94.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.087 · newest: 0.087 · change: 0.000

Affected products

Totolink Lr1200gb
Totolink Lr1200gb Firmware — versions 9.1.0u.6619_b20230130

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

github.com/shinypolaris/vuln-reports/blob/master/TOTOLINK LR1200GB/1/README.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2023-46977?: CVE-2023-46977 is a critical-severity vulnerability in Totolink Lr1200gb, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2023-10-31.
How severe is CVE-2023-46977?: Critical severity. CVSS v3 base score is 9.8 out of 10.