TI-2021-16856 Aliases CVE-2021-39615 GHSA-849p-5hj4-w47q

D-Link DSR-500N version 1.02 contains hard-coded credentials for undocumented user…

MEDIUM 46CWE-798Published 2021-08-23 · Updated 2024-08-04

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

D-Link DSR-500N version 1.02 contains hard-coded credentials for undocumented user accounts in the '/etc/passwd' file.If an attacker succeeds in recovering the cleartext password of the identified hash value, he will be able to log in via SSH or Telnet and thus gain access to the underlying embedded Linux operating system on the device. Fixed in version 2.12/2. NOTE: This vulnerability only affects products that are no longer supported by the maintainer

Why it matters now

EPSS 0.02196 82nd 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:dlink:dsr-500n_firmware:1.02:::::::*	1.02	Vulnerable	D-Link Japan K.K.
cpe:2.3:h:dlink:dsr-500n:-:::::::*	not specified by NVD	Running on	D-Link Japan K.K.

cpe:2.3:o:dlink:dsr-500n_firmware:1.02:*:*:*:*:*:*:* Versions 1.02 Vulnerable ·D-Link Japan K.K.
cpe:2.3:h:dlink:dsr-500n:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2021-39615
2026-10-03 Alias added: GHSA-849p-5hj4-w47q

References

Exploit 1

https://www.nussko.com/advisories/advisory-2021-08-02.txt

Advisory 2

TI-2013-05068 Multiple SQL injection vulnerabilities in D-Link DSR-150 with firmware before 1.08B44… CVSS 3.1CRITICAL 9.8
TI-2013-05069 The runShellCmd function in systemCheck.htm in D-Link DSR-150 with firmware before… CVSS 2.0HIGH 10.0
TI-2020-15768 An issue was discovered on D-Link DSR-250 3.17 devices. CVSS 3.1HIGH 8.8
TI-2020-15766 A lack of input validation and access controls in Lua CGIs on D-Link DSR VPN routers may… CVSS 3.1HIGH 8.8
TI-2020-15767 An issue was discovered on D-Link DSR-250 3.17 devices. CVSS 3.1HIGH 8.8
TI-2013-05757 D-Link DSR-150 with firmware before 1.08B44; DSR-150N with firmware before 1.05B64… CVSS 2.0HIGH 7.8

See all 7 →

Sources

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