CVE-2020-29557KEV · OVERDUE

D-Link DIR-825 R1 Devices Buffer Overflow Vulnerability

Critical · published January 29, 2021

Patch now

Confirmed exploited, and the score agrees

CVSS calls it critical at 9.8. It is confirmed in active exploitation. It sits in the 99.0th percentile for exploit probability.

1635
days past CISA
deadline
CVSS v3.1
9.8
EPSS
54%
Percentile
99.0
In the wild
Confirmed
What it is

🚨 A buffer overflow vulnerability in D-Link DIR-825 R1 devices could allow attackers to execute remote code without any authentication. 🔥 Think of it like a delivery service that mistakenly accepts any package without verifying the sender's identity — a recipe for disaster if the wrong package gets opened! 📦 With this vulnerability, an attacker could gain full control of your device, potentially accessing your network and sensitive information. It's absolutely devastating, as they could manipulate your device to perform malicious actions, impact other connected devices, or launch further attacks! ⚡

Put simply

Think of it like a delivery service that mistakenly accepts any package without verifying the sender's identity — a recipe for disaster if the wrong package gets opened! 📦 This buffer overflow occurs in the web interface of the D-Link DIR-825 R1, allowing remote code execution before authentication. This means attackers can send specially crafted requests to exploit the flaw easily.

What to do

With this vulnerability, an attacker could gain full control of your device, potentially accessing your network and sensitive information. It's absolutely devastating, as they could manipulate your device to perform malicious actions, impact other connected devices, or launch further attacks! ⚡ To safeguard your network, update your D-Link DIR-825 R1 to the patched version released after November 20, 2020. Additionally, consider changing default credentials and restricting access to the device's web interface. 🛡️ You’ve got this! By taking these steps, you can protect your network from this vulnerability. Stay vigilant! 💪

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.54320 · 99.0th percentile
Published
2021-01-29T19:32Z
KEV added
2021-11-03 · due 2022-05-03
EPSS history
Timeline
  • 03 NOV 00:00Z
    Added to CISA KEV — remediate by May 3
    kev
  • 29 JAN 19:32Z
    An issue was discovered on D-Link DIR-825 R1 devices through 3.0.1 before 2020-11-20
    cvelistv5