diff --git a/meta-networking/recipes-irc/znc/znc/0001-Fix-build-error-with-OpenSSL-4.patch b/meta-networking/recipes-irc/znc/znc/0001-Fix-build-error-with-OpenSSL-4.patch
new file mode 100644
index 0000000000..7e43eeff7f
--- /dev/null
+++ b/meta-networking/recipes-irc/znc/znc/0001-Fix-build-error-with-OpenSSL-4.patch
@@ -0,0 +1,51 @@
+From c6b7fece1ec318c67ed8afa80ef914a135180a4f Mon Sep 17 00:00:00 2001
+From: Ravi Kant Sharma <ravi.kant.sharma@canonical.com>
+Date: Tue, 16 Jun 2026 10:08:17 +0200
+Subject: [PATCH] Fix build error with OpenSSL 4
+
+Upstream-Status: Backport [https://github.com/znc/znc/commit/c6b7fece1ec3]
+Signed-off-by: Jaipaul Cheernam <jaipaul.cheernam@est.tech>
+---
+ src/SSLVerifyHost.cpp | 4 ++--
+ src/Utils.cpp         | 5 ++++-
+ 2 files changed, 6 insertions(+), 3 deletions(-)
+
+diff --git a/src/SSLVerifyHost.cpp b/src/SSLVerifyHost.cpp
+index ccc20898e2..99b215bc23 100644
+--- a/src/SSLVerifyHost.cpp
++++ b/src/SSLVerifyHost.cpp
+@@ -306,8 +306,8 @@ typedef enum {
+ static HostnameValidationResult matches_common_name(const char* hostname,
+                                                     const X509* server_cert) {
+     int common_name_loc = -1;
+-    X509_NAME_ENTRY* common_name_entry = nullptr;
+-    ASN1_STRING* common_name_asn1 = nullptr;
++    const X509_NAME_ENTRY* common_name_entry = nullptr;
++    const ASN1_STRING* common_name_asn1 = nullptr;
+     CONST_ASN1_STRING_DATA char* common_name_str = nullptr;
+ 
+     // Find the position of the CN field in the Subject field of the certificate
+diff --git a/src/Utils.cpp b/src/Utils.cpp
+index ed2c9c8386..744f61d195 100644
+--- a/src/Utils.cpp
++++ b/src/Utils.cpp
+@@ -129,7 +129,8 @@ void CUtils::GenerateCert(FILE* pOut) {
+     sEmailAddr += "@";
+     sEmailAddr += sHostName;
+ 
+-    X509_NAME* pName = X509_get_subject_name(pCert.get());
++    X509_NAME* pName = X509_NAME_new();
++    if (!pName) return;
+     X509_NAME_add_entry_by_txt(pName, "OU", MBSTRING_ASC,
+                                (unsigned char*)pLogName, -1, -1, 0);
+     X509_NAME_add_entry_by_txt(pName, "CN", MBSTRING_ASC,
+@@ -137,7 +138,9 @@ void CUtils::GenerateCert(FILE* pOut) {
+     X509_NAME_add_entry_by_txt(pName, "emailAddress", MBSTRING_ASC,
+                                (unsigned char*)sEmailAddr.c_str(), -1, -1, 0);
+ 
++    X509_set_subject_name(pCert.get(), pName);
+     X509_set_issuer_name(pCert.get(), pName);
++    X509_NAME_free(pName);
+ 
+     if (!X509_sign(pCert.get(), pKey.get(), EVP_sha256())) return;
+ 
diff --git a/meta-networking/recipes-irc/znc/znc_1.10.2.bb b/meta-networking/recipes-irc/znc/znc_1.10.2.bb
index 7793813234..31984742d8 100644
--- a/meta-networking/recipes-irc/znc/znc_1.10.2.bb
+++ b/meta-networking/recipes-irc/znc/znc_1.10.2.bb
@@ -4,7 +4,9 @@ LICENSE = "Apache-2.0"
 LIC_FILES_CHKSUM = "file://LICENSE;md5=3b83ef96387f14655fc854ddc3c6bd57"
 
 DEPENDS = "zlib"
-SRC_URI = "gitsm://github.com/znc/znc.git;branch=master;protocol=https;tag=${BP}"
+SRC_URI = "gitsm://github.com/znc/znc.git;branch=master;protocol=https;tag=${BP} \
+           file://0001-Fix-build-error-with-OpenSSL-4.patch \
+           "
 
 SRCREV = "59af2206c62724eec0d8c43d3c1c0b70610ca1d9"