CVE-2020-29557 D-Link DIR-825 R1 Devices: memory-safety flaw
In plain words: The program mishandles the memory it uses to keep track of data. A specially made input can scramble that memory. Usually lets an attacker crash the program or run their own code with its permissions.
Confirmed exploited by CISA on · US federal patch deadline May 3, 2022
What to do
- Install D-Link's security update for DIR-825 R1 Devices. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Turn on automatic firmware updates and replace gear the maker no longer supports.
- Change default passwords and switch off remote administration and features you do not use.
- Do not put storage boxes or cameras directly on the internet — use the maker's app or a VPN.
Who is affected
Could reach you. This one is aimed at devices or apps of the kind people own.
What's at risk: Taken over in bulk to join botnets, used to watch your traffic, or — for storage boxes — locked by ransomware.
The details
- Official name
- D-Link DIR-825 R1 Devices Buffer Overflow Vulnerability
- Product
- D-Link DIR-825 R1 Devices
- CISA description
- D-Link DIR-825 R1 devices contain a buffer overflow vulnerability in the web interface that may allow for remote code execution.
- Type of flaw
- Memory-safety flaw (CWE-119)
- Confirmed exploited
- Nov 3, 2021
- US federal patch deadline
- May 3, 2022
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Answering about CVE-2020-29557 ·
Questions about CVE-2020-29557
Is CVE-2020-29557 being exploited?
Yes. CISA added CVE-2020-29557 to its Known Exploited Vulnerabilities catalog on Nov 3, 2021, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2020-29557?
Install D-Link's security update for DIR-825 R1 Devices. If no update exists, follow the vendor's workaround or stop using the product until one ships. Turn on automatic firmware updates and replace gear the maker no longer supports.
Am I affected by CVE-2020-29557?
Only if you use D-Link DIR-825 R1 Devices. This one is aimed at devices or apps of the kind people own.