CVE-2025-1252

Application corruption or interruption via license-file parsing

Published May 8, 2025 · Updated Dec 16, 2025

Heap-based buffer overflow in Real-Time Innovations Connext Professional allows local users to corrupt application integrity or interrupt service. The Core Libraries license-file parser writes beyond a heap allocation while processing crafted license content. Exploitation requires low-privilege filesystem access to replace a license file loaded by a Connext application, with no reported data disclosure.

CVSS severity7.1
High
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer overflow in Real-Time Innovations Connext Professional allows local users to corrupt application integrity or interrupt service. The Core Libraries license-file parser writes beyond a heap allocation while processing crafted license content. Exploitation requires low-privilege filesystem access to replace a license file loaded by a Connext application, with no reported data disclosure.

The record

CVE
CVE-2025-1252
Published
May 8, 2025
Updated
Dec 16, 2025
Vendor
Real-Time Innovations
Product
Connext Professional
Classifications
CWE-122, CAPEC-46, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 8, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 16, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=4.4d <5.2.*
  2. Affected versionversion=5.3.0 <5.3.*
  3. Affected versionversion=6.0.0 <6.0.1.42
  4. Affected versionversion=6.1.0 <6.1.2.23
  5. Affected versionversion=7.0.0 <7.3.0.7
  6. Affected versionversion=7.4.0 <7.5.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Real-Time Innovations · Connext Professionalversion=4.4d <5.2.*; version=5.3.0 <5.3.*; version=6.0.0 <6.0.1.42; version=6.1.0 <6.1.2.23; version=7.0.0 <7.3.0.7; version=7.4.0 <7.5.0

Published CVSS scores

7.1Real-Time InnovationsCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
6.9Real-Time InnovationsCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

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

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow
CAPEC-46Overflow Variables and Tags
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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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