The RC4 algorithm, as used in the TLS protocol and SSL protocol, has many single-byte biases, which makes it easier for remote attackers to conduct plaintext-recovery attacks via statistical analysis of ciphertext in a large number of sessions that use the same plaintext.
History

Fri, 22 May 2026 11:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-327
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 21 Oct 2024 14:15:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
Vendors & Products Mozilla firefox Esr

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-05-22T10:41:19.291Z

Reserved: 2013-03-14T00:00:00.000Z

Link: CVE-2013-2566

cve-icon Vulnrichment

Updated: 2024-08-06T15:44:32.649Z

cve-icon NVD

Status : Modified

Published: 2013-03-15T21:55:01.047

Modified: 2026-04-29T01:13:23.040

Link: CVE-2013-2566

cve-icon Redhat

Severity : Moderate

Publid Date: 2013-03-15T00:00:00Z

Links: CVE-2013-2566 - Bugzilla

cve-icon OpenCVE Enrichment

No data.