CVE-2026-24831Network attack vector

Process hang via non-prime certificate modulus

Published Jan 27, 2026 · Updated Jan 27, 2026

An infinite loop in IX-Ray Engine 1.6 before 1.3 allows remote attackers to hang the process through a crafted certificate. The bundled OpenSSL BN_mod_sqrt function calculates indefinitely when supplied a non-prime modulus during certificate parsing. Exploitation requires a network-reachable path that parses an attacker-supplied certificate; the loop can pin a CPU and leave the affected process unresponsive.

CVSS severity7.5
High
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

An infinite loop in IX-Ray Engine 1.6 before 1.3 allows remote attackers to hang the process through a crafted certificate. The bundled OpenSSL BN_mod_sqrt function calculates indefinitely when supplied a non-prime modulus during certificate parsing. Exploitation requires a network-reachable path that parses an attacker-supplied certificate; the loop can pin a CPU and leave the affected process unresponsive.

The record

CVE
CVE-2026-24831
Published
Jan 27, 2026
Updated
Jan 27, 2026
Vendor
IX-Ray Team
Product
IX-Ray Engine 1.6
Classifications
CWE-835, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 27, 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 <1.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IX-Ray Team · IX-Ray Engine 1.6version=0 <1.3

Published CVSS scores

7.5GovTech CSGCVSS: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 exploitUnconfirmed

Weakness, pattern, technique

CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')
T1499.004Application or System Exploitation

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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