What is CVE-2025-28024?

CVE-2025-28024 is a critical-severity vulnerability in Totolink A810r, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2025-04-22.

How severe is CVE-2025-28024?

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

Is CVE-2025-28024 known to be exploited?

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

Buffer overflow in Totolink A810r

CVE-2025-28024

TOTOLINK A810R V4.1.2cu.5182_B20201026 was found to contain a buffer overflow vulnerability in the cstecgi.cgi

Vulnerability class: Buffer Overflow

Published 2025-04-22 · 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: 0.006 (44.2th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.006 · change: +0.000

Affected products

Totolink A810r
Totolink A810r Firmware — versions 4.1.2cu.5182_b20201026

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

Public proof-of-concept exploits

Lunax0/CVE_

References

locrian-lightning-dc7.notion.site/BufferOverflow5-1978e5e2b1a2800caaced7ae3fb47… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-28024?: CVE-2025-28024 is a critical-severity vulnerability in Totolink A810r, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2025-04-22.
How severe is CVE-2025-28024?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2025-28024 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.