CVE-2023-33982

Name: CVE-2023-33982
Creator: NVD / NIST
Published: 2023-05-24T18:15:10.927+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.9/10EPSS 0.46%

Last modified Jun 17, 2026

CVE-2023-33982 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. Bramble Handshake Protocol (BHP) in Briar before 1.5.3 is not forward secure: eavesdroppers can decrypt network traffic between two accounts if they later compromise both accounts. NOTE: the eavesdropping is typically impractical because BHP runs over an encrypted session that uses the Tor hidden service protocol.. EPSS estimates a 0.46% chance of exploitation in the next 30 days.

Description

Bramble Handshake Protocol (BHP) in Briar before 1.5.3 is not forward secure: eavesdroppers can decrypt network traffic between two accounts if they later compromise both accounts. NOTE: the eavesdropping is typically impractical because BHP runs over an encrypted session that uses the Tor hidden service protocol.

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

0.46%

36.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Briarproject	Briar	< 1.5.3

References

https://briarproject.org/news/2023-three-security-issues-found-and-fixed/Vendor Advisory
https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_YuanmingSong.pdfExploit, Technical Description, Third Party Advisory
https://briarproject.org/news/2023-three-security-issues-found-and-fixed/Vendor Advisory
https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_YuanmingSong.pdfExploit, Technical Description, Third Party Advisory

Timeline

Published: May 24, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-33982?

How severe is CVE-2023-33982?

CVE-2023-33982 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 0.46% probability of exploitation in the next 30 days.

How do I fix CVE-2023-33982?

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-2023-33982?

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

Scan your code now

Source: NVD / NIST