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Home - Vulnerability NotesPrint
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CERT-In Vulnerability Note CIVN-2026-0078
Multiple Vulnerabilities in OpenSSL

Original Issue Date:February 09, 2026

Severity Rating: CRITICAL

Software Affected

  • OpenSSL version 3.6.
  • OpenSSL version 3.5.
  • OpenSSL version 3.4.
  • OpenSSL version 3.3.
  • OpenSSL version 3.0.
  • OpenSSL version 1.1.1
  • OpenSSL version 1.0.2

Overview

Multiple vulnerabilities have been reported in OpenSSL which could be exploited by an attacker to execute arbitrary code causing denial of service, or disclosure of sensitive information on the targeted system.

Target Audience
All end-user organizations and individuals using OpenSSL.

Risk Assessment
Risk of remote code execution, denial of service, memory corruption and integrity bypass.

Impact Assessment
Potential compromise of system, service disruption and unauthorized access to sensitive information.

Description

OpenSSL is a free and open-source software for general-purpose cryptography and secure communication. It provides a robust, full-featured toolkit for implementing the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols.

Multiple vulnerabilities exist in OpenSSL due to insufficient validation of untrusted input, unsafe handling of ASN.1 parameters and improper bounds checking in several cryptographic parsing and verification code paths. These issues cause NULL pointer dereferences, type confusion, stack and heap buffer overflows and excessive memory allocation. A remote attacker could exploit these vulnerabilities by sending specially crafted inputs.

Successful exploitation of these vulnerabilities could allow a remote attacker to trigger remote code execution, denial of service condition, data manipulation and sensitive information disclosure on the targeted system.

Solution

Apply appropriate updates as mentioned by the vendor:
https://openssl-library.org/news/secadv/20260127.txt

Vendor Information

OpenSSL
https://openssl-library.org/news/vulnerabilities/

References

OpenSSL
https://openssl-library.org/news/secadv/20260127.txt

CVE Name
CVE-2025-11187
CVE-2025-15467
CVE-2025-15468
CVE-2025-15469
CVE-2025-22795
CVE-2025-22796
CVE-2025-69148
CVE-2025-68160
CVE-2025-66199
CVE-2025-69419
CVE-2025-69420
CVE-2025-69421

Disclaimer

The information provided herein is on "as is" basis, without warranty of any kind.

Contact Information

Email: info@cert-in.org.in
Phone: +91-11-22902657

Postal address

Indian Computer Emergency Response Team (CERT-In)
Ministry of Electronics and Information Technology
Government of India
Electronics Niketan
6, CGO Complex, Lodhi Road,
New Delhi - 110 003
India

 
Indian Computer Emergency Response Team - CERT-In, Ministry of Electronics and Information Technology, Government of India.
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