CVE-2022-48566

Name: CVE-2022-48566
Creator: NVD / NIST
Published: 2023-08-22T19:16:32.087+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.9/10EPSS 1.15%

Last modified Jun 17, 2026

CVE-2022-48566 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. An issue was discovered in compare_digest in Lib/hmac.py in Python through 3.9.1. Constant-time-defeating optimisations were possible in the accumulator variable in hmac.compare_digest.. EPSS estimates a 1.15% chance of exploitation in the next 30 days.

Description

An issue was discovered in compare_digest in Lib/hmac.py in Python through 3.9.1. Constant-time-defeating optimisations were possible in the accumulator variable in hmac.compare_digest.

Metrics

CVSS 3.1

5.9/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

1.15%

62.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-362

Affected Software

Vendor	Product	Versions
Python	Python	< 3.6.13
Python	Python	>= 3.7.0, < 3.7.10
Python	Python	>= 3.8.0, < 3.8.7
Python	Python	>= 3.9.0, < 3.9.1
Debian	Debian Linux	10.0
Netapp	Active Iq Unified Manager	All versions
Netapp	Converged Systems Advisor Agent	All versions

References

https://bugs.python.org/issue40791Exploit, Issue Tracking, Patch, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2023/09/msg00022.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/10/msg00017.htmlMailing List, Third Party Advisory
https://security.netapp.com/advisory/ntap-20231006-0013/Third Party Advisory
https://bugs.python.org/issue40791Exploit, Issue Tracking, Patch, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2023/09/msg00022.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/10/msg00017.htmlMailing List, Third Party Advisory
https://security.netapp.com/advisory/ntap-20231006-0013/Third Party Advisory

Timeline

Published: Aug 22, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-48566?

An issue was discovered in compare_digest in Lib/hmac.py in Python through 3.9.1. Constant-time-defeating optimisations were possible in the accumulator variable in hmac.compare_digest.

How severe is CVE-2022-48566?

CVE-2022-48566 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 1.15% probability of exploitation in the next 30 days.

How do I fix CVE-2022-48566?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-48566?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST