In Netgear XR300 V1.0.3.38_10.3.30, a stack-based buffer overflow vulnerability exists in the HTTPD service through the usb_device.cgi endp…

published 2025-07-15 15 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-21453

cvss: 6.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 27%
public exploits: 0; none known

In Netgear XR300 V1.0.3.38_10.3.30, a stack-based buffer overflow vulnerability exists in the HTTPD service through the usb_device.cgi endpoint. The vulnerability occurs when processing POST requests containing the share_name parameter.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 15 mo ago (2025-07-15)

Exploit prediction

0.34% chance of exploitation in the next 30 days, higher than 27% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/lafdrew/IOT/blob/main/Netgear%20XR300/share_name%20of%20usb_device.cgi/buffer%20overflow%20in%20share_neme%20of%20usb_device.cgi.md referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CNA	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Classification

Weakness

CWE-121 Stack-based Buffer Overflow

References

github.com /lafdrew/IOT/blob/main/Netgear%20XR300/share_name%20of%20usb_device.cgi/buffer%20overflow%20in%20share_neme%20
exploit, third-party-advisory

Sources

CVE List CVE-2025-52080
NVD CVE-2025-52080

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary