Beeline Smart Box 2.0.38 is vulnerable to Cross Site Scripting (XSS) via the choose_mac parameter to setup.cgi.

published 2021-11-10 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-28454

cvss: 6.1; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.1%; EPSS 1.1% chance of exploitation in 30 days, percentile 65%
public exploits: 0; none known

Exploit prediction

1.08% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

youtu.be https://youtu.be/CbWI-JQteRo referenced PoC, tagged "exploit" by a source, unverified
youtu.be https://youtu.be/HL73yOW7YWU?t=520 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:P/A:N

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

youtu.be /CbWI-JQteRo
exploit, third-party-advisory
youtu.be /HL73yOW7YWU?t=520
exploit, third-party-advisory
tula.beeline.ru /customers/pomosh/home/domashnij-internet/nastrojki-s-routerom/beelinesmartbox/
product, vendor-advisory

Sources

CVE List CVE-2021-41427
NVD CVE-2021-41427

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