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Connect Secure CVE-2025-5451

| EUVDEUVD-2025-20512 MEDIUM
Stack-based Buffer Overflow (CWE-121)
2025-07-08 3c1d8aa1-5a33-4ea4-8992-aadd6440af75
4.9
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
4.9 MEDIUM
AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

3
EUVD ID Assigned
Mar 16, 2026 - 04:21 euvd
EUVD-2025-20512
Analysis Generated
Mar 16, 2026 - 04:21 vuln.today
CVE Published
Jul 08, 2025 - 15:15 nvd
MEDIUM 4.9

DescriptionCVE.org

A stack-based buffer overflow in Ivanti Connect Secure before version 22.7R2.8 and Ivanti Policy Secure before version 22.7R1.5 allows a remote authenticated attacker with admin rights to trigger a denial of service.

Analysis

A stack-based buffer overflow in Ivanti Connect Secure before version 22.7R2.8 and Ivanti Policy Secure before version 22.7R1.5 allows a remote authenticated attacker with admin rights to trigger a denial of service.

Technical ContextAI

A buffer overflow occurs when data written to a buffer exceeds its allocated size, potentially overwriting adjacent memory and corrupting program state. This vulnerability is classified as Stack-based Buffer Overflow (CWE-121).

RemediationAI

Use memory-safe languages or bounds-checked functions. Enable ASLR, DEP/NX, and stack canaries. Apply vendor patches promptly.

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A heap overflow vulnerability in IPSec component of Ivanti Connect Secure (9.x, 22.x) and Ivanti Policy Secure allows an

CVE-2019-11540 CRITICAL POC
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In Pulse Secure Pulse Connect Secure version 9.0RX before 9.0R3.4 and 8.3RX before 8.3R7.1 and Pulse Policy Secure versi

CVE-2024-21888 HIGH POC
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A privilege escalation vulnerability in web component of Ivanti Connect Secure (9.x, 22.x) and Ivanti Policy Secure (9.x

CVE-2024-22024 HIGH POC
8.3 Feb 13

An XML external entity or XXE vulnerability in the SAML component of Ivanti Connect Secure (9.x, 22.x), Ivanti Policy Se

CVE-2019-11538 HIGH POC
7.7 Apr 26

In Pulse Secure Pulse Connect Secure version 9.0RX before 9.0R3.4, 8.3RX before 8.3R7.1, 8.2RX before 8.2R12.1, and 8.1R

CVE-2020-8218 HIGH POC
7.2 Jul 30

A code injection vulnerability exists in Pulse Connect Secure <9.1R8 that allows an attacker to crafted a URI to perform

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CVE-2025-5451 vulnerability details – vuln.today

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