OpenSSL up to 3.0.7 X.509 Certificate Verification buffer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability has been found in OpenSSL up to 3.0.7 (Network Encryption Software) and classified as critical. Affected by this vulnerability is an unknown code block of the component X.509 Certificate Verification. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The program 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. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was released 02/07/2023. It is possible to read the advisory at This vulnerability is known as CVE-2022-4203. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 02/07/2023).

Upgrading to version 3.0.8 eliminates this vulnerability.





  • open-source

CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔒
VulDB Reliability: 🔍



VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍


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

Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒


Threat Intelligenceinfo

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


Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: OpenSSL 3.0.8
Patch: c927a3492698c254637da836762f9b1f86cffabc


11/29/2022 CVE reserved
02/07/2023 +70 days Advisory disclosed
02/07/2023 +0 days VulDB entry created
03/06/2023 +27 days VulDB last update



Status: Confirmed

CVE: CVE-2022-4203 (🔒)


Created: 02/07/2023 06:45 PM
Updated: 03/06/2023 09:20 AM
Changes: 02/07/2023 06:45 PM (38), 03/06/2023 09:20 AM (4)
Complete: 🔍


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