What is CVE-2023-39550?

CVE-2023-39550 is a high-severity vulnerability in NETGEAR Jwnr2000v2, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2023-08-07.

How severe is CVE-2023-39550?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in NETGEAR Jwnr2000v2

CVE-2023-39550

Netgear JWNR2000v2 v1.0.0.11, XWN5001 v0.4.1.1, and XAVN2001v2 v0.4.0.7 were discovered to contain multiple buffer overflows via the http_passwd and http_username parameters in the check_auth function.

Vulnerability class: Buffer Overflow

Published 2023-08-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.011 (63.9th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 63.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

NETGEAR Jwnr2000v2
NETGEAR Jwnr2000v2 Firmware — versions 1.0.0.11
NETGEAR Xavn2001v2
NETGEAR Xavn2001v2 Firmware — versions 0.4.0.7
NETGEAR Xwn5001
NETGEAR Xwn5001 Firmware — versions 0.4.1.1

Weakness classification (CWE)

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

References

www.netgear.com/about/security/ (Vendor Advisory)
github.com/FirmRec/IoT-Vulns/blob/main/netgear/http_passwd_auth/README.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2023-39550?: CVE-2023-39550 is a high-severity vulnerability in NETGEAR Jwnr2000v2, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2023-08-07.
How severe is CVE-2023-39550?: High severity. CVSS v3 base score is 8.8 out of 10.