What is CVE-2024-30602?

CVE-2024-30602 is a critical-severity vulnerability in Tenda Fh1203, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2024-03-28.

How severe is CVE-2024-30602?

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

Is CVE-2024-30602 known to be exploited?

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

Buffer overflow in Tenda Fh1203

CVE-2024-30602

Tenda FH1203 v2.0.1.6 has a stack overflow vulnerability in the schedStartTime parameter of the setSchedWifi function.

Vulnerability class: Buffer Overflow

Published 2024-03-28 · 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: 0.007 (52.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Tenda Fh1203
Tenda Fh1203 Firmware — versions 2.0.1.6

Weakness classification (CWE)

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

Public proof-of-concept exploits

References

github.com/abcdefg-png/IoT-vulnerable/blob/main/Tenda/FH/FH1203/setSchedWifi_st… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2024-30602?: CVE-2024-30602 is a critical-severity vulnerability in Tenda Fh1203, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2024-03-28.
How severe is CVE-2024-30602?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2024-30602 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.