VDB-175985 · CVE-2021-22894 · SA44784

Ivanti Pulse Connect Secure up to 9.1R11.3 Meeting Room buffer overflow

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.6	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Ivanti Pulse Connect Secure up to 9.1R11.3. It has been classified as critical. The impacted element is an unknown function of the component Meeting Room Handler. The manipulation leads to buffer overflow. This vulnerability is referenced as CVE-2021-22894. Remote exploitation of the attack is possible. Furthermore, an exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Ivanti Pulse Connect Secure up to 9.1R11.3 (Network Encryption Software). It has been rated as critical. This issue affects an unknown code block of the component Meeting Room Handler. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability.

The weakness was published 05/28/2021 as SA44784. The advisory is shared at kb.pulsesecure.net. The identification of this vulnerability is CVE-2021-22894. Technical details are unknown but an exploit is available.

It is declared as attacked. The CISA Known Exploited Vulnerabilities Catalog lists this issue since 11/03/2021 with a due date of 05/03/2022:

Apply updates per vendor instructions.

Upgrading to version 9.1R11.4 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Network Encryption Software

Vendor

Ivanti

Name

Pulse Connect Secure

Version

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.6

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Attacked

EPSS Score: 🔍
EPSS Percentile: 🔍

KEV Added: 🔍
KEV Due: 🔍
KEV Remediation: 🔍
KEV Ransomware: 🔍
KEV Notice: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Pulse Connect Secure 9.1R11.4

Timelineinfo

01/06/2021 🔍
05/28/2021 +141 days 🔍
05/28/2021 +0 days 🔍
12/17/2025 +1664 days 🔍

Sourcesinfo

Advisory: SA44784
Status: Confirmed

CVE: CVE-2021-22894 (🔍)
GCVE (CVE): GCVE-0-2021-22894
GCVE (VulDB): GCVE-100-175985
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 05/28/2021 06:51
Updated: 12/17/2025 19:09
Changes: 05/28/2021 06:51 (39), 05/30/2021 13:53 (5), 10/17/2022 11:25 (2), 04/21/2024 10:33 (27), 07/08/2024 19:21 (1), 09/12/2024 11:20 (1), 02/13/2025 00:45 (18), 12/17/2025 19:09 (1)
Complete: 🔍
Cache ID: 216::103