CVE-2026-66859

Apache Thrift: c_glib multiplexed processor crashes on a message it cannot route

8.7 HighFix available

NULL Pointer Dereference, Use of Uninitialized Variable vulnerability in Apache Thrift c_glib bindings.

This issue affects Apache Thrift: before 0.25.0.

Users are recommended to upgrade to version 0.25.0, which fixes the issue.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

0.32%Down 0.1 points since Oct 3, 2026

What each source reports

CVE List Score used 8.7

Apache Thrift: c_glib multiplexed processor crashes on a message it cannot route

NULL Pointer Dereference, Use of Uninitialized Variable vulnerability in Apache Thrift c_glib bindings.

This issue affects Apache Thrift: before 0.25.0.

Users are recommended to upgrade to version 0.25.0, which fixes the issue.

Record: CVE-2026-66859
CVSS 4.0: 8.7 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Weakness: CWE-476, CWE-457
Updated: 2026-11-02

EUVDEUVD-2026-91584 8.7

NULL Pointer Dereference, Use of Uninitialized Variable vulnerability in Apache Thrift c_glib bindings.

This issue affects Apache Thrift: before 0.25.0.

Users are recommended to upgrade to version 0.25.0, which fixes the issue.

Record: EUVD-2026-91584
CVSS 4.0: 8.7 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-3rvm-c477-m8mc 8.7

NULL Pointer Dereference, Use of Uninitialized Variable vulnerability in Apache Thrift c_glib...

NULL Pointer Dereference, Use of Uninitialized Variable vulnerability in Apache Thrift c_glib bindings.

This issue affects Apache Thrift: before 0.25.0.

Users are recommended to upgrade to version 0.25.0, which fixes the issue.

Record: GHSA-3rvm-c477-m8mc
CVSS 4.0: 8.7 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness: CWE-457
Updated: 2026-11-02

NVD 8.7

NULL Pointer Dereference, Use of Uninitialized Variable vulnerability in Apache Thrift c_glib bindings.

This issue affects Apache Thrift: before 0.25.0.

Users are recommended to upgrade to version 0.25.0, which fixes the issue.

Record: CVE-2026-66859
CVSS 4.0: 8.7 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness: CWE-457, CWE-476
Updated: 2026-11-02

OSVDEBIAN-CVE-2026-66859 8.7

NULL Pointer Dereference, Use of Uninitialized Variable vulnerability in Apache Thrift c_glib bindings. This issue affects Apache Thrift: before 0.25.0. Users are recommended to upgrade to version 0.25.0, which fixes the issue.

Record: DEBIAN-CVE-2026-66859
CVSS 4.0: 8.7 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Updated: 2026-11-02

OSVRHSA-2026:74369 7.5

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Record: RHSA-2026:74369
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

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OSVUBUNTU-CVE-2026-66859 8.7

Record: UBUNTU-CVE-2026-66859
CVSS 4.0: 8.7 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Updated: 2026-11-02

OSVAZL-106590 No score

CVE-2026-66859 affecting package thrift for versions less than 0.25.0-1

NULL Pointer Dereference, Use of Uninitialized Variable vulnerability in Apache Thrift c_glib bindings.

This issue affects Apache Thrift: before 0.25.0.

Users are recommended to upgrade to version 0.25.0, which fixes the issue.

Record: AZL-106590
Updated: 2026-11-02

OSVBIT-thrift-2026-66859 No score

Apache Thrift: c_glib multiplexed processor crashes on a message it cannot route

NULL Pointer Dereference, Use of Uninitialized Variable vulnerability in Apache Thrift c_glib bindings.

This issue affects Apache Thrift: before 0.25.0.

Users are recommended to upgrade to version 0.25.0, which fixes the issue.

Record: BIT-thrift-2026-66859
Updated: 2026-11-02

OSVMGASA-2026-0562 No score

Updated arrow, thrift, ceph packages fix security vulnerabilities

The updated packages fix many security vulnerabilities. Please see the links for additional information.

Record: MGASA-2026-0562
Updated: 2026-11-02

Affected products

apache software foundation thrift

Affected packages

Affected packages
Package	Affected	Fixed
`thrift` Azure Linux:3	before 0.25.0-1	0.25.0-1
`thrift` Bitnami	before 0.25.0	0.25.0
`thrift` Debian:12	All versions, plus listed versions 0.17.0-20.17.0-30.17.0-40.18.1-10.18.1-2 Show 16 moreShow less 0.19.0-10.19.0-20.19.0-2.10.19.0-2.1~exp10.19.0-30.19.0-40.20.0-10.22.0-10.22.0-20.22.0-30.22.0-40.23.0-10.23.0-20.23.0-30.24.0-10.24.0-2	None known
`thrift` Debian:13	All versions, plus listed versions 0.19.0-40.20.0-10.22.0-10.22.0-20.22.0-3 Show 6 moreShow less 0.22.0-40.23.0-10.23.0-20.23.0-30.24.0-10.24.0-2	None known
`thrift` Debian:14	All versions, plus listed versions 0.19.0-40.20.0-10.22.0-10.22.0-20.22.0-3 Show 6 moreShow less 0.22.0-40.23.0-10.23.0-20.23.0-30.24.0-10.24.0-2	None known
`arrow` Mageia:10 From an advisory covering 14 CVEs	before 17.0.0-4.1.mga10	17.0.0-4.1.mga10
`thrift` Mageia:10 From an advisory covering 14 CVEs	before 0.25.0-1.mga10	0.25.0-1.mga10
`ceph` Mageia:10 From an advisory covering 14 CVEs	before 20.2.4-1.1.mga10	20.2.4-1.1.mga10
`perl-thrift` Red Hat:hummingbird:1 From an advisory covering 29 CVEs	before 0:0.25.0-0.1.hum1	0:0.25.0-0.1.hum1
`python3-thrift` Red Hat:hummingbird:1 From an advisory covering 29 CVEs	before 0:0.25.0-0.1.hum1	0:0.25.0-0.1.hum1

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Affected packages
Package	Affected	Fixed
`thrift` Red Hat:hummingbird:1 From an advisory covering 29 CVEs	before 0:0.25.0-0.1.hum1	0:0.25.0-0.1.hum1
`thrift-devel` Red Hat:hummingbird:1 From an advisory covering 29 CVEs	before 0:0.25.0-0.1.hum1	0:0.25.0-0.1.hum1
`thrift-glib` Red Hat:hummingbird:1 From an advisory covering 29 CVEs	before 0:0.25.0-0.1.hum1	0:0.25.0-0.1.hum1
`thrift-qt` Red Hat:hummingbird:1 From an advisory covering 29 CVEs	before 0:0.25.0-0.1.hum1	0:0.25.0-0.1.hum1
`thrift` Ubuntu:20.04:LTS	All versions, plus listed versions 0.11.0-60.13.0-2build10.13.0-2build2	None known
`thrift` Ubuntu:22.04:LTS	All versions, plus listed versions 0.13.0-6ubuntu10.13.0-6ubuntu20.13.0-6ubuntu30.13.0-70.16.0-2	None known
`thrift` Ubuntu:24.04:LTS	All versions, plus listed versions 0.17.0-40.19.0-20.19.0-2build10.19.0-2.1build40.19.0-2.1build5	None known
`thrift` Ubuntu:26.10	All versions, plus listed versions 0.22.0-3ubuntu10.23.0-30.23.0-3ubuntu1	None known
`thrift` Ubuntu:26.04:LTS	All versions, plus listed versions 0.19.0-4build10.22.0-30.22.0-3ubuntu1	None known

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-66859 is a high vulnerability (CVSS 8.7) in Apache Software Foundation Thrift, published October 2, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.32%, the 24th percentile. Fixed in thrift 0.25.0-1.

References

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