CVE-2026-55971: Heap-based Buffer Overflow vulnerability in Apache Thrift C++ bindings. This issue affects Apache Thrift: bef

Q: How do I fix CVE-2026-55971?

thrift: upgrade to 0.24.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-55971 being exploited?

CVE-2026-55971 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-55971 affect?

CVE-2026-55971 affects thrift. Severity is critical (CVSS 9.8). 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.

Q: How urgent is CVE-2026-55971?

Priority 63/100. Critical severity; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action; On your watchlist

This week

CRITICAL 9.8REMOTEWATCHLISTUPGRADE

CVE-2026-55971 is a critical-severity flaw (CVSS 9.8) affecting thrift. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Critical severity
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.0% (top 38%)
CISA exploited list	No
Weakness	CWE-122
Published	2026-07-27
Last modified	2026-10-24

Publisher (CNA): Apache Software Foundation · Vendor: apache

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-27 12:16 UTCPublished CVE record published
2026-10-24 13:10 UTCUpdated Record last modified

apache thrift UPGRADE

Affected: < 0.24.0

Fixed in: 0.24.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy thrift || rpm -q thrift || thrift --version

2. UPGRADE to 0.24.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade thrift

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade thrift

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Exact fixes by distribution

Fedora 46 · gnome-shell-extension-tiling-assistant · FIXED · 56-1.fc46 · FEDORA-2026-ebf66a5321 · source

sudo dnf upgrade --advisory=FEDORA-2026-ebf66a5321

Debian 12 · thrift · NO FIX YET

Debian 13 · thrift · NO FIX YET

RHEL AI 3.4 for RHEL 9 · thrift · FIXED · thrift-0.24.0-1.el9ai

sudo dnf upgrade --advisory=RHSA-2026:49716 rpm -q thrift

RHEL AI 3.5 for RHEL 9 · thrift · FIXED · thrift-0.24.0-1.el9ai

sudo dnf upgrade --advisory=RHSA-2026:49715 rpm -q thrift

RHEL AI 3.6 for RHEL 9 · thrift · FIXED · thrift-0.24.0-2.el9ai

sudo dnf upgrade --advisory=RHSA-2026:51358 rpm -q thrift

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-55971?

thrift: upgrade to 0.24.0. Exact commands for each OS are on this page.

Is CVE-2026-55971 being exploited?

CVE-2026-55971 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-55971 affect?

CVE-2026-55971 affects thrift. Severity is critical (CVSS 9.8). 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.

How urgent is CVE-2026-55971?

Priority 63/100. Critical severity; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action; On your watchlist

Related CVEs

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CVE-2026-58662 CRITICAL 9.1 UPGRADE Improper Validation of Specified Quantity in Input, Out-of-bounds Read vulnerability in Apache Thrift C++ bind
CVE-2026-41608 HIGH 7.5 UPGRADE Improper Handling of Highly Compressed Data (Data Amplification) vulnerability in Apache Thrift Python binding
CVE-2026-43871 HIGH 7.5 UPGRADE Loop with Unreachable Exit Condition ('Infinite Loop') vulnerability in Apache Thrift Python, Go, PHP and Java
CVE-2026-45112 HIGH 7.5 UPGRADE Allocation of Resources Without Limits or Throttling vulnerability in Apache Thrift Java bindings. This issue

References

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