PT-2025-27456 · D Link · D-Link Dir-816 A2

Synmac05 · Published 2025-06-30 · Updated 2025-07-03 · CVE-2025-45931

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions: D-Link DIR-816-A2 version DIR-816A2 FWv1.10CNB05 R1B011D88210

Description: An issue in the D-Link DIR-816-A2 allows a remote attacker to execute arbitrary code via the system() function in the bin/goahead file. This enables the attacker to run malicious code on the affected device. The estimated number of potentially affected devices and details about real-world incidents where this issue was exploited are not provided.

Recommendations: As a temporary workaround, consider disabling the system() function in the bin/goahead file until a patch is available. Restrict access to the bin/goahead file to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

RCE

Command Injection

Weakness Enumeration

CWE-77

Related Identifiers

BDU:2025-09526

CVE-2025-45931

Affected Products

D-Link Dir-816 A2

References · 12

• 🔥 https://github.com/Synmac05/CVE-advisories/blob/main/CVE-2025-45931.md · Exploit
• https://osv.dev/vulnerability/CVE-2025-45931 · Vendor Advisory
• https://dlink.com/en/security-bulletin · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-09526 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-45931 · Security Note
• https://t.me/purp_sec/833 · Telegram Post
• http://d-link.com · Note
• https://twitter.com/CVEnew/status/1939739418203480240 · Twitter Post
• https://twitter.com/SecAideInfo/status/1940716229833986279 · Twitter Post
• http://dir-816-a2.com · Note
• https://t.me/cvetracker/27445 · Telegram Post
• https://t.me/cvenotify/127146 · Telegram Post