CVE-2026-55971CWE-122

Apache Thrift: C++ ZLIB heap buffer overflow (write) in THeaderTransport::untransform()

Critical · published July 27, 2026

CVSS v4.0
9.3
EPSS
1%
Percentile
61.8
In the wild
Unconfirmed
What it is

Heap-based Buffer Overflow vulnerability in Apache Thrift C++ bindings.

This issue affects Apache Thrift: before 0.24.0.

Users are recommended to upgrade to version 0.24.0, which fixes the issue.

The record
Technical detail
CVSS v4.0
9.3 · CRITICAL
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00979 · 61.8th percentile
Weakness
CWE-122 · Heap-based Buffer Overflow
Published
2026-07-27T11:11Z
EPSS history
Timeline
  • 27 JUL 11:11Z
    Apache Thrift: C++ ZLIB heap buffer overflow (write) in THeaderTransport::untransform()
    cvelistv5