🛡️ CVE-2024-27657 — dir-823g-firmware

🟠 CVSS 8.8 — High ⚠️ Exploit Public CWE-121 NVD
8.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

D-Link DIR-823G A1V1.0.2B05 was discovered to contain a buffer overflow via the User-Agent parameter. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input, and possibly remote code execution.

How this vulnerability can be exploited

This issue can be reached from an adjacent network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2024-27657 is classified as CWE-121: Stack-based Buffer Overflow. An oversized write to a stack buffer overwrites saved state such as return addresses, which can redirect execution.

Affected software

CVE-2024-27657 is recorded against 1 package.

  • dir-823g-firmware

Timeline and source

Published on 29 February 2024 and last revised on 17 June 2026. A public exploit is known to exist, which raises the urgency of patching considerably. Record sourced from NVD.

References

calm-healer-839.notion.site
calm-healer-839.notion.site

Details

Severity HIGH
CVSS Score 8.8
CVSS Vector CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE CWE-121
Public Exploit ⚠️ Yes
Source NVD
Published 2024-02-29
Updated 2026-08-11
Modified 2026-06-17
Fix URL N/A

Affected Packages

Software From version Fixed in
dir-823g-firmware — —

Similar Threats

Exploit Protection

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CVE-2024-27657 carries CVSS 8.8 High rating and a public exploit already exists. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

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