What is CVE-2013-4102?

CVE-2013-4102 is a critical-severity vulnerability in Cryptocat Project, classified under Use of Insufficiently Random Values. CVSS score: 9.1/10. Published 2019-11-04.

How severe is CVE-2013-4102?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Vulnerability in Cryptocat Project

CVE-2013-4102

Cryptocat before 2.0.22 strophe.js Math.random() Random Number Generator Weakness

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

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.020 (79.6th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 79.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000

Affected products

Cryptocat Project

Weakness classification (CWE)

CWE-330 — Use of Insufficiently Random Values

References

www.openwall.com/lists/oss-security/2013/07/10/15 (Mailing List, Third Party Advisory)
tobtu.com/decryptocat.php (Product)
vuldb.com/ (Third Party Advisory)
www.securityfocus.com/bid/61095 (VDB Entry, Third Party Advisory)

Frequently asked questions

What is CVE-2013-4102?: CVE-2013-4102 is a critical-severity vulnerability in Cryptocat Project, classified under Use of Insufficiently Random Values. CVSS score: 9.1/10. Published 2019-11-04.
How severe is CVE-2013-4102?: Critical severity. CVSS v3 base score is 9.1 out of 10.