TI-2021-17479 Aliases CVE-2021-40415 GHSA-fv9v-2855-83mf

An incorrect default permission vulnerability exists in the cgiserver.cgi…

MEDIUM 62CWE-284Published 2022-01-28 · Updated 2025-04-15

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-284.

Summary

An incorrect default permission vulnerability exists in the cgiserver.cgi cgi_check_ability functionality of reolink RLC-410W v3.0.0.136_20121102. In cgi_check_ability the Format API does not have a specific case, the user permission will default to 7. This will give non-administrative users the possibility to format the SD card and reboot the device.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00807 57th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:o:reolink:rlc-410w_firmware:3.0.0.136_20121102:::::::*	3.0.0.136_20121102	Vulnerable	Reolink
cpe:2.3:h:reolink:rlc-410w:-:::::::*	not specified by NVD	Running on	Reolink

cpe:2.3:o:reolink:rlc-410w_firmware:3.0.0.136_20121102:*:*:*:*:*:*:* Versions 3.0.0.136_20121102 Vulnerable ·Reolink
cpe:2.3:h:reolink:rlc-410w:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Reolink

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2021-40415
2026-10-03 Alias added: GHSA-fv9v-2855-83mf

References

Exploit 1

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1425

TI-2021-17471 An OS command injection vulnerability exists in the device network settings functionality… KEVCVSS 3.1HIGH 7.2
TI-2019-08219 On Reolink RLC-410W, C1 Pro, C2 Pro, RLC-422W, and RLC-511W devices through 1.0.227, an… KEVCVSS 3.1HIGH 7.2
TI-2021-17473 An OS command injection vulnerability exists in the device network settings functionality… CVSS 3.1CRITICAL 9.8
TI-2021-17472 An OS command injection vulnerability exists in the device network settings functionality… CVSS 3.1CRITICAL 9.8
TI-2021-17483 A firmware update vulnerability exists in the 'factory' binary of reolink RLC-410W… CVSS 3.1HIGH 7.5
TI-2021-20034 A denial of service vulnerability exists in the cgiserver.cgi JSON command parser… CVSS 3.1HIGH 7.7

See all 87 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences