diff --git a/osdep.c b/osdep.c
index 03817f0..c07faf5 100644
--- a/osdep.c
+++ b/osdep.c
@@ -24,6 +24,7 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <stdarg.h>
+#include <stdbool.h>
 #include <string.h>
 #include <errno.h>
 #include <unistd.h>
@@ -48,6 +49,8 @@
 #include "trace.h"
 #include "qemu_socket.h"
 
+static bool fips_enabled = false;
+
 static const char *qemu_version = QEMU_VERSION;
 
 int socket_set_cork(int fd, int v)
@@ -253,3 +256,29 @@
 {
     return qemu_version;
 }
+
+void fips_set_state(bool requested)
+{
+#ifdef __linux__
+    if (requested) {
+        FILE *fds = fopen("/proc/sys/crypto/fips_enabled", "r");
+        if (fds != NULL) {
+            fips_enabled = (fgetc(fds) == '1');
+            fclose(fds);
+        }
+    }
+#else
+    fips_enabled = false;
+#endif /* __linux__ */
+
+#ifdef _FIPS_DEBUG
+    fprintf(stderr, "FIPS mode %s (requested %s)\n",
+	    (fips_enabled ? "enabled" : "disabled"),
+	    (requested ? "enabled" : "disabled"));
+#endif
+}
+
+bool fips_get_state(void)
+{
+    return fips_enabled;
+}
diff --git a/osdep.h b/osdep.h
index 1e15a4b..d4b887d 100644
--- a/osdep.h
+++ b/osdep.h
@@ -3,6 +3,7 @@
 
 #include <stdarg.h>
 #include <stddef.h>
+#include <stdbool.h>
 #ifdef __OpenBSD__
 #include <sys/types.h>
 #include <sys/signal.h>
@@ -154,4 +155,7 @@
 void qemu_set_version(const char *);
 const char *qemu_get_version(void);
 
+void fips_set_state(bool requested);
+bool fips_get_state(void);
+
 #endif
diff --git a/qemu-doc.texi b/qemu-doc.texi
index a41448a..f32e9e2 100644
--- a/qemu-doc.texi
+++ b/qemu-doc.texi
@@ -1124,9 +1124,11 @@
 to provide high security. The password can be fairly easily brute-forced by
 a client making repeat connections. For this reason, a VNC server using password
 authentication should be restricted to only listen on the loopback interface
-or UNIX domain sockets. Password authentication is requested with the @code{password}
-option, and then once QEMU is running the password is set with the monitor. Until
-the monitor is used to set the password all clients will be rejected.
+or UNIX domain sockets. Password authentication is not supported when operating
+in FIPS 140-2 compliance mode as it requires the use of the DES cipher. Password
+authentication is requested with the @code{password} option, and then once QEMU
+is running the password is set with the monitor. Until the monitor is used to
+set the password all clients will be rejected.
 
 @example
 qemu-system-i386 [...OPTIONS...] -vnc :1,password -monitor stdio
diff --git a/qemu-options.hx b/qemu-options.hx
index 9277414..5e7d0dc 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -2787,6 +2787,17 @@
     "-qtest-log LOG  specify tracing options\n",
     QEMU_ARCH_ALL)
 
+#ifdef __linux__
+DEF("enable-fips", 0, QEMU_OPTION_enablefips,
+    "-enable-fips    enable FIPS 140-2 compliance\n",
+    QEMU_ARCH_ALL)
+#endif
+STEXI
+@item -enable-fips
+@findex -enable-fips
+Enable FIPS 140-2 compliance mode.
+ETEXI
+
 HXCOMM This is the last statement. Insert new options before this line!
 STEXI
 @end table
diff --git a/ui/vnc.c b/ui/vnc.c
index cfc61a7..312ad7f 100644
--- a/ui/vnc.c
+++ b/ui/vnc.c
@@ -32,6 +32,7 @@
 #include "acl.h"
 #include "qemu-objects.h"
 #include "qmp-commands.h"
+#include "osdep.h"
 
 #define VNC_REFRESH_INTERVAL_BASE 30
 #define VNC_REFRESH_INTERVAL_INC  50
@@ -2875,6 +2876,15 @@
     while ((options = strchr(options, ','))) {
         options++;
         if (strncmp(options, "password", 8) == 0) {
+            if (fips_get_state()) {
+                fprintf(stderr,
+                        "VNC password auth disabled due to FIPS mode, "
+                        "consider using the VeNCrypt or SASL authentication "
+                        "methods as an alternative\n");
+                g_free(vs->display);
+                vs->display = NULL;
+                return -1;
+            }
             password = 1; /* Require password auth */
         } else if (strncmp(options, "reverse", 7) == 0) {
             reverse = 1;
diff --git a/vl.c b/vl.c
index 1fd1114..8cda85f 100644
--- a/vl.c
+++ b/vl.c
@@ -159,6 +159,7 @@
 #include "qemu-queue.h"
 #include "cpus.h"
 #include "arch_init.h"
+#include "osdep.h"
 
 #include "ui/qemu-spice.h"
 
@@ -3198,6 +3199,9 @@
             case QEMU_OPTION_qtest_log:
                 qtest_log = optarg;
                 break;
+            case QEMU_OPTION_enablefips:
+                fips_set_state(true);
+                break;
             default:
                 os_parse_cmd_args(popt->index, optarg);
             }