CVE-2021-37587

Name: CVE-2021-37587
Creator: NVD / NIST
Published: 2021-07-30T14:15:18.543+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.82%

Last modified Jun 17, 2026

CVE-2021-37587 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. In Charm 0.43, any single user can decrypt DAC-MACS or MA-ABE-YJ14 data.. EPSS estimates a 0.82% chance of exploitation in the next 30 days.

Description

In Charm 0.43, any single user can decrypt DAC-MACS or MA-ABE-YJ14 data.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

0.82%

52.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-327

Affected Software

Vendor	Product	Versions
Jhu	Charm	0.43

References

https://eprint.iacr.org/2020/460Third Party Advisory
https://github.com/JHUISI/charm/issues/276Issue Tracking, Third Party Advisory
https://jhuisi.github.io/charm/_modules/abenc_maabe_yj14.htmlPatch, Third Party Advisory
https://jhuisi.github.io/charm/charm/schemes/abenc/abenc_dacmacs_yj14.htmlThird Party Advisory
https://www2.hci.uni-hannover.de/papers/Tan2019.pdfTechnical Description, Third Party Advisory
https://eprint.iacr.org/2020/460Third Party Advisory
https://github.com/JHUISI/charm/issues/276Issue Tracking, Third Party Advisory
https://jhuisi.github.io/charm/_modules/abenc_maabe_yj14.htmlPatch, Third Party Advisory
https://jhuisi.github.io/charm/charm/schemes/abenc/abenc_dacmacs_yj14.htmlThird Party Advisory
https://www2.hci.uni-hannover.de/papers/Tan2019.pdfTechnical Description, Third Party Advisory

Timeline

Published: Jul 30, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-37587?

In Charm 0.43, any single user can decrypt DAC-MACS or MA-ABE-YJ14 data.

How severe is CVE-2021-37587?

CVE-2021-37587 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.82% probability of exploitation in the next 30 days.

How do I fix CVE-2021-37587?

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-2021-37587?

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

Scan your code now

Source: NVD / NIST