CVE-2026-93925 Apache Thrift: C++ `THeaderTransport::writeVarint32()` stack buffer overflow on a negative protocol id
A stack buffer overflow in Apache Thrift C++ allows attackers to execute arbitrary code or cause denial of service via crafted protocol IDs.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-93925?
CVE-2026-93925 is a high-severity memory corruption vulnerability in Apache Thrift, published on 2 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Stack-based buffer overflow, Incorrect bitwise shift of integer vulnerability in Apache Thrift C++ THeaderProtocol.
This issue affects Apache Thrift: before 0.25.0.
Users are recommended to upgrade to version 0.25.0, which fixes the issue.
Which versions are affected by CVE-2026-93925?
1 open source package ship an affected version, including thrift.
| Package | Affected | Fixed in |
|---|---|---|
thrift Bitnami | All versions | 0.25.0 |
How do I fix CVE-2026-93925?
Upgrade thrift to 0.25.0 or later.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-93925 being exploited?
There is no known exploitation of CVE-2026-93925 in the wild and no public exploit code.
Sources
Also known as AZL-105392, BIT-thrift-2026-93925, DEBIAN-CVE-2026-93925, ECHO-6408-669e-310f, GHSA-4884-wghm-c634, MINI-rp53-287x-5394 and 1 more.