What is CVE-2013-4104?

CVE-2013-4104 is a high-severity vulnerability in Cryptocat Project, classified under Inadequate Encryption Strength. CVSS score: 7.5/10. Published 2019-11-04.

How severe is CVE-2013-4104?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Cryptocat Project

CVE-2013-4104

Cryptocat before 2.0.22 has weak encryption in the Socialist Millionnaire Protocol

Published 2019-11-04 · last modified 2026-06-16.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.008 (53.6th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Cryptocat Project

Weakness classification (CWE)

CWE-326 — Inadequate Encryption Strength

References

www.openwall.com/lists/oss-security/2013/07/10/15 (Mailing List, Third Party Advisory)
tobtu.com/decryptocat.php (Vendor Advisory)
www.securityfocus.com/bid/61108 (VDB Entry, Third Party Advisory)
vuldb.com/ (Permissions Required, Third Party Advisory)

Frequently asked questions

What is CVE-2013-4104?: CVE-2013-4104 is a high-severity vulnerability in Cryptocat Project, classified under Inadequate Encryption Strength. CVSS score: 7.5/10. Published 2019-11-04.
How severe is CVE-2013-4104?: High severity. CVSS v3 base score is 7.5 out of 10.