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CVE-2013-2566
The RC4 algorithm, as used in the TLS protocol and SSL protocol, has many single-byte biases, which makes it easier for remote attackers…
Medium5.9EPSS 84.4%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Medium5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVDNVD · Modified | 3.1 | Medium5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 84.4% · top 0.3% of all CVEs (5 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.9.
Weakness
Affected products
n/a
- affected n/a
References (21)
- http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://blog.cryptographyengineering.com/2013/03/attack-of-week-rc4-is-kind-of-broken-in.html (opens in a new tab)x_refsource_MISCx_transferred
- 58796 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://cr.yp.to/talks/2013.03.12/slides.pdf (opens in a new tab)x_refsource_MISCx_transferred
- HPSBGN03324 (opens in a new tab)vendor-advisoryx_refsource_HPx_transferred
- http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- GLSA-201504-01 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- GLSA-201406-19 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- USN-2031-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- USN-2032-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- http://my.opera.com/securitygroup/blog/2013/03/20/on-the-precariousness-of-rc4 (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://www.opera.com/security/advisory/1046 (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05336888 (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://www.mozilla.org/security/announce/2013/mfsa2013-103.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://www.isg.rhul.ac.uk/tls/ (opens in a new tab)x_refsource_MISCx_transferred
- http://www.opera.com/docs/changelogs/unified/1215/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05289935 (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2013-2566)Record last updated .