CVE-2021-28961 Command injection in n/a
Authenticated remote attackers can inject arbitrary commands into the OpenWrt DDNS package via POST requests, leading to code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-28961?
CVE-2021-28961 is a high-severity command injection vulnerability in Openwrt Openwrt, published on 21 Mar 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
applications/luci-app-ddns/luasrc/model/cbi/ddns/detail.lua in the DDNS package for OpenWrt 19.07 allows remote authenticated users to inject arbitrary commands via POST requests.
Weakness: CWE-78
Which versions are affected by CVE-2021-28961?
It affects 1 product.
Products include Openwrt Openwrt.
How do I fix CVE-2021-28961?
No fix has been published for CVE-2021-28961 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2021-28961 being exploited?
There is no known exploitation of CVE-2021-28961 in the wild and no public exploit code.
Other vulnerabilities in Openwrt Openwrt
- CVE-2020-28951 Use after free in n/a
- CVE-2026-62948 Cross-site scripting in openwrt
- CVE-2026-30871 OpenWrt Project has Stack-based Buffer Overflow in DNS PTR Query
- CVE-2026-30872 OpenWrt Project has a Stack-based Buffer Overflow vulnerability via IPv6 reverse DNS lookup
- CVE-2019-17367 Cross-site request forgery in n/a
Sources
Also known as GHSA-48wc-mjph-v799.