TI-2021-08688 Aliases CVE-2021-27141 GHSA-f5rh-xqjc-3gc6

An issue was discovered on FiberHome HG6245D devices through RP2613.

MEDIUM 58CWE-798Published 2021-02-10 · Updated 2024-08-03

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-798.

Summary

An issue was discovered on FiberHome HG6245D devices through RP2613. Credentials in /fhconf/umconfig.txt are obfuscated via XOR with the hardcoded *j7a(L#yZ98sSd5HfSgGjMj8;Ss;d)(*&^#@$a2s0i3g key. (The webs binary has details on how XOR is used.)

Why it matters now

EPSS 0.15983 96th 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

Not available: CISA has not published SSVC decision points for this record.

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:fiberhome:hg6245d_firmware::::::::	up to rp2613	Vulnerable	FiberHome
cpe:2.3:h:fiberhome:hg6245d:-:::::::*	not specified by NVD	Running on	FiberHome

cpe:2.3:o:fiberhome:hg6245d_firmware:*:*:*:*:*:*:*:* Versions up to rp2613 Vulnerable ·FiberHome
cpe:2.3:h:fiberhome:hg6245d:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·FiberHome

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2021-27141
2026-10-03 Alias added: GHSA-f5rh-xqjc-3gc6

References

Exploit 1

https://pierrekim.github.io/blog/2021-01-12-fiberhome-ont-0day-vulnerabilities.html#httpd-decryption-algorithm

TI-2021-08709 An issue was discovered on FiberHome HG6245D devices through RP2613. CVSS 3.1CRITICAL 9.8
TI-2021-08711 An issue was discovered on FiberHome HG6245D devices through RP2613. CVSS 3.1CRITICAL 9.8
TI-2021-08705 An issue was discovered on FiberHome HG6245D devices through RP2613. CVSS 3.1CRITICAL 9.8
TI-2021-08696 An issue was discovered on FiberHome HG6245D devices through RP2613. CVSS 3.1CRITICAL 9.8
TI-2021-08695 An issue was discovered on FiberHome HG6245D devices through RP2613. CVSS 3.1CRITICAL 9.8
TI-2021-08692 An issue was discovered on FiberHome HG6245D devices through RP2613. CVSS 3.1CRITICAL 9.8

See all 39 →

Sources

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