CVE-2026-55971: apache software foundation apache thrift Heap-based Buffer Overflow
CVSS: 9.8v3.1CriticalAnalyzed
AliasesRHSA-2026:49715RHSA-2026:49716RHSA-2026:51358UBUNTU-CVE-2026-55971DEBIAN-CVE-2026-55971
Published 27-07-2026Last modified 28-07-2026
Vulnerability summary
CVE-2026-55971 is a critical (CVSS 9.8) Heap-based Buffer Overflow vulnerability in apache software foundation apache thrift. EPSS estimates a 0.98% chance of exploitation in the next 30 days, higher than 61.5% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.1 (NVD)EPSS score
0.98%
0%100%
Low · +0.43 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 2 · Related 1Timeline
- 27-07-2026PublishedVulnerability first disclosed.
- 28-07-2026Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
7 scores · 5 sources · 2 versionsCritical 9.3Preferred score · CVE.org (CNA)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated9.3CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- NVDNIST9.3CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/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
Critical 9.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSources4 sources · 8.4–9.8
- OSV · Red hatEcosystem advisory · calculated8.4HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HDiffers
- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.98%
Chance of exploitation in the next 30 days
Percentile
62%
Versus all other CVEs
30-day change
+0.43 pp
From 0.55% on 18-09-2026
18-09-202618-10-2026
EPSS score0.98%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Redhat12 products
- perl-thrift< 0:0.24.0-1.el9ai | < 0:0.24.0-2.el9ai
- python3-thrift< 0:0.24.0-1.el9ai | < 0:0.24.0-2.el9ai
- python3-thrift-debuginfo< 0:0.24.0-1.el9ai | < 0:0.24.0-2.el9ai
- thrift< 0:0.24.0-1.el9ai | < 0:0.24.0-2.el9ai
- thrift-debuginfo< 0:0.24.0-1.el9ai | < 0:0.24.0-2.el9ai
Apache1 product
- thrift< 0.24.0
Apache software foundation1 product
- apache thrift< 0.24.0
Debian1 product
- thriftAll versions (No fix recorded)
Ubuntu1 product
- thriftAll versions (No fix recorded)
5 vendors · 16 products
