CVE-2026-22591Public exploitNetwork attack vector

Remote process crash via unbounded filter recursion

Published Sep 9, 2026 · Updated Sep 9, 2026

Uncontrolled recursion in eProsima Fast DDS allows remote attackers in a DDS domain to crash participants via a crafted SEDP DATA submessage. The DDSSQLFilter PEG parser builds a recursive parse tree for an untrusted filterExpression without depth or practical length limits, exhausting the process stack on deeply nested conditions. Reaching the flaw requires RTPS access to the same DDS domain and a victim writer that processes content-filter discovery data; successful exploitation terminates the participant process.

CVSS severity7.5
High
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled recursion in eProsima Fast DDS allows remote attackers in a DDS domain to crash participants via a crafted SEDP DATA submessage. The DDSSQLFilter PEG parser builds a recursive parse tree for an untrusted filterExpression without depth or practical length limits, exhausting the process stack on deeply nested conditions. Reaching the flaw requires RTPS access to the same DDS domain and a victim writer that processes content-filter discovery data; successful exploitation terminates the participant process.

The record

CVE
CVE-2026-22591
Published
Sep 9, 2026
Updated
Sep 9, 2026
Vendor
eProsima
Product
Fast DDS
Classifications
CWE-674, CWE-400, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 9, 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=< 2.6.12
  2. Affected versionversion=>= 2.7.0, < 2.14.6
  3. Affected versionversion=>= 3.0.0, < 3.2.4
  4. Affected versionversion=>= 3.4.0, < 3.4.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

eProsima · Fast DDSversion=< 2.6.12; version=>= 2.7.0, < 2.14.6; version=>= 3.0.0, < 3.2.4; version=>= 3.4.0, < 3.4.3

Published CVSS scores

7.5GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 exploitPublished

Weakness, pattern, technique

CWE-674Uncontrolled Recursion
CWE-400Uncontrolled Resource Consumption
T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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