CVE-2026-75893 Heap based buffer overflow at ipaccess_proxy_read_msg()
A heap-based buffer overflow in Osmocom osmo-bsc allows attackers to execute arbitrary code or cause denial of service via crafted IPA frame lengths.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-75893?
CVE-2026-75893 is a high-severity memory corruption vulnerability in Osmocom osmo-bsc, published on 18 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In osmo-bsc from 1.0.1 through 1.14.1 a heap based buffer overflow issue was found in the ipaccess_proxy_read_msg() function via IPA frame lengths.
Weakness: CWE-122
Which versions are affected by CVE-2026-75893?
How do I fix CVE-2026-75893?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-75893 being exploited?
There is no known exploitation of CVE-2026-75893 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-75893, GHSA-5p56-5h9g-2gjv, UBUNTU-CVE-2026-75893.