What is CVE-2018-14557?

CVE-2018-14557 is a high-severity vulnerability in Tenda Ac10, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.5/10. Published 2019-04-25.

How severe is CVE-2018-14557?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Tenda Ac10

CVE-2018-14557

An issue was discovered on Tenda AC7 devices with firmware through V15.03.06.44_CN(AC7), AC9 devices with firmware through V15.03.05.19(6318)_CN(AC9), and AC10 devices with firmware through V15.03.06.23_CN(AC10). A buffer overflow vulnerability exists in the router's web server (httpd). When processing the page parameters for a post request, the value is directly written with sprintf to a local variable placed on the stack, which overrides the return address of the function, a causing buffer overflow.

Vulnerability class: Buffer Overflow

Published 2019-04-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.014 (72.1th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 72.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

github.com/zsjevilhex/iot/blob/master/route/tenda/tenda-03/Tenda.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-14557?: CVE-2018-14557 is a high-severity vulnerability in Tenda Ac10, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.5/10. Published 2019-04-25.
How severe is CVE-2018-14557?: High severity. CVSS v3 base score is 7.5 out of 10.