What is CVE-2023-31808?

CVE-2023-31808 is a high-severity vulnerability in Technicolor Tg670, classified under Use of Hard-coded Credentials. CVSS score: 7.2/10. Published 2023-09-19.

How severe is CVE-2023-31808?

High severity. CVSS v3 base score is 7.2 out of 10.

Vulnerability in Technicolor Tg670

CVE-2023-31808

Technicolor TG670 10.5.N.9 devices contain multiple accounts with hard-coded passwords. One account has administrative privileges, allowing for unrestricted access over the WAN interface if Remote Administration is enabled.

Published 2023-09-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (48.8th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 48.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

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

Affected products

Technicolor Tg670
Technicolor Tg670 Firmware — versions 10.5.n.9

Weakness classification (CWE)

CWE-798 — Use of Hard-coded Credentials

References

www.kb.cert.org/vuls/id/913565 (US Government Resource, Third Party Advisory)

Frequently asked questions

What is CVE-2023-31808?: CVE-2023-31808 is a high-severity vulnerability in Technicolor Tg670, classified under Use of Hard-coded Credentials. CVSS score: 7.2/10. Published 2023-09-19.
How severe is CVE-2023-31808?: High severity. CVSS v3 base score is 7.2 out of 10.