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Vulnerability record · CVE-2021-4469 · published 14 November 2025

CVE-2021-4469: Missing authentication for critical function vulnerability

Denver SHO-110 IP cameras expose a secondary HTTP service on TCP port 8001 that provides access to a '/snapshot' endpoint without authentication. While the primary web interface on port 80 enforces authentication, the backdoor service allows any remote attacker to retrieve image snapshots by directly requesting the 'snapshot' endpoint. An attacker can repeatedly collect snapshots and reconstruct the camera stream, compromising the confidentiality of the monitored environment.

8.7 CVSS 4.0 High EPSS 0.63% · top 52.0% CWE-306 · Missing authentication for critical functionCWE-1242 · CWE-1242 Deferred
8.7CVSS 4.0 base score
0.63%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

Description

Denver SHO-110 IP cameras expose a secondary HTTP service on TCP port 8001 that provides access to a '/snapshot' endpoint without authentication. While the primary web interface on port 80 enforces authentication, the backdoor service allows any remote attacker to retrieve image snapshots by directly requesting the 'snapshot' endpoint. An attacker can repeatedly collect snapshots and reconstruct the camera stream, compromising the confidentiality of the monitored environment.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
http://old.denver.eu/products/smart-home-security/denver-sho-110/c-1024/c-1243/p-3826
https://www.exploit-db.com/exploits/50162
https://www.vulncheck.com/advisories/denver-sho-110-ip-camera-unauthenticated-snapshot-access

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Source: NIST National Vulnerability Database (record CVE-2021-4469), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.