CVE-2020-7248 Memory corruption in n/a
A stack-based buffer overflow in libubox allows attackers to execute arbitrary code or cause denial of service on OpenWrt devices.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-7248?
CVE-2020-7248 is a high-severity memory corruption vulnerability in Openwrt Openwrt, published on 16 Mar 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
libubox in OpenWrt before 18.06.7 and 19.x before 19.07.1 has a tagged binary data JSON serialization vulnerability that may cause a stack based buffer overflow.
Weakness: CWE-787
Which versions are affected by CVE-2020-7248?
It affects 1 product.
Products include Openwrt Openwrt.
How do I fix CVE-2020-7248?
No fix has been published for CVE-2020-7248 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-7248 being exploited?
There is no known exploitation of CVE-2020-7248 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-2021-28961 Command injection in n/a
Sources
Also known as GHSA-g6fq-pqgw-hfmj.