CVE-2026-71560Network attack vector

Heap disclosure or crash via tagged-integer decoding

Published Aug 7, 2026 · Updated Aug 7, 2026

Out-of-bounds read in Apache Fory C++ 0.14.0 through 1.4.0 allows remote attackers to disclose heap data or crash a process. The tagged-integer fast-path deserializer reads beyond its heap buffer while decoding crafted integer fields in serialized structs. Exposure requires an application to deserialize attacker-controlled Fory C++ data containing tagged integer fields; other implementations and C++ uses without those fields are unaffected.

CVSS severity9.1
Critical
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in Apache Fory C++ 0.14.0 through 1.4.0 allows remote attackers to disclose heap data or crash a process. The tagged-integer fast-path deserializer reads beyond its heap buffer while decoding crafted integer fields in serialized structs. Exposure requires an application to deserialize attacker-controlled Fory C++ data containing tagged integer fields; other implementations and C++ uses without those fields are unaffected.

The record

CVE
CVE-2026-71560
Published
Aug 7, 2026
Updated
Aug 7, 2026
Vendor
The Apache Software Foundation
Product
Apache Fory
Classifications
CWE-125, CWE-502
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 7, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.14.0 <1.5.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache Foryversion=0.14.0 <1.5.0

Published CVSS scores

9.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
CWE-502Deserialization of Untrusted Data

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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