If you need to prove the password (e.g., migration or auditing), you can extract the hash and run an offline dictionary attack:
Let’s review the most common tools found by searching "cisco secret 5 password decrypt": cisco secret 5 password decrypt
However, there are a few workarounds that can help: If you need to prove the password (e
Understanding the difference between encryption and hashing is the key to understanding why "decryption" tools don't work, but cracking tools do. migration or auditing)
While it is not possible to directly decrypt a Cisco secret 5 password, you can use a tool like John the Ripper (JTR) to attempt to crack the password using a brute-force or dictionary-based attack.