CVE-2006-4924
HIGH · CVSS 7.8EPSS 38.1%EU EUVD
sshd in OpenSSH before 4.4, when using the version 1 SSH protocol, allows remote attackers to cause a denial of service (CPU consumption) via an SSH packet that contains duplicate blocks, which is not properly handled by the CRC compensation attack detector.
Key facts
- CVSS score
- 7.8 (v2.0)
- Severity
- HIGH
- CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:C- Weakness (CWE)
- CWE-399
- EPSS score
- 38.1% (99th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2006-4911)
- Published
- September 27, 2006
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2006-4911 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
- openbsd / openssh
and 6 more…
References
- ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-06:22.openssh.asc
- ftp://ftp.sco.com/pub/unixware7/714/security/p534336/p534336.txt
- ftp://patches.sgi.com/support/free/security/advisories/20061001-01-P.asc
- http://blogs.sun.com/security/entry/sun_alert_102962_security_vulnerability
- http://bugs.gentoo.org/show_bug.cgi?id=148228
- http://docs.info.apple.com/article.html?artnum=305214
- http://itrc.hp.com/service/cki/docDisplay.do?docId=c00815112
- http://lists.apple.com/archives/security-announce/2007/Mar/msg00002.html
- http://marc.info/?l=openssh-unix-dev&m=115939141729160&w=2
- http://secunia.com/advisories/21923(Vendor Advisory)
- http://secunia.com/advisories/22091(Vendor Advisory)
- http://secunia.com/advisories/22116(Vendor Advisory)
- http://secunia.com/advisories/22158(Vendor Advisory)
- http://secunia.com/advisories/22164(Vendor Advisory)
- http://secunia.com/advisories/22183(Vendor Advisory)
- http://secunia.com/advisories/22196(Vendor Advisory)
- http://secunia.com/advisories/22208(Vendor Advisory)
- http://secunia.com/advisories/22236(Vendor Advisory)
- http://secunia.com/advisories/22245(Vendor Advisory)
- http://secunia.com/advisories/22270(Vendor Advisory)
- http://secunia.com/advisories/22298(Vendor Advisory)
- http://secunia.com/advisories/22352(Vendor Advisory)
- http://secunia.com/advisories/22362(Vendor Advisory)
- http://secunia.com/advisories/22487(Vendor Advisory)
- http://secunia.com/advisories/22495(Vendor Advisory)
- http://secunia.com/advisories/22823(Vendor Advisory)
- http://secunia.com/advisories/22926(Vendor Advisory)
- http://secunia.com/advisories/23038(Vendor Advisory)
- http://secunia.com/advisories/23241(Vendor Advisory)
- http://secunia.com/advisories/23340(Vendor Advisory)
- http://secunia.com/advisories/23680
- http://secunia.com/advisories/24479
- http://secunia.com/advisories/24799
- http://secunia.com/advisories/24805
- http://secunia.com/advisories/25608
- http://secunia.com/advisories/29371
- http://secunia.com/advisories/34274
- http://security.freebsd.org/advisories/FreeBSD-SA-06%3A22.openssh.asc
- http://security.gentoo.org/glsa/glsa-200609-17.xml
- http://security.gentoo.org/glsa/glsa-200611-06.xml
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
Query CVEs from your AI assistant
The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.
Add the CVE brain