CVE-2006-4925
packet.c in ssh in OpenSSH allows remote attackers to cause a denial of service (crash) by...
packet.c in ssh in OpenSSH allows remote attackers to cause a denial of service (crash) by sending an invalid protocol sequence with USERAUTH_SUCCESS before NEWKEYS, which causes newkeys[mode] to be NULL.
Exploit likelihood
What each source reports
NVD Score used
packet.c in ssh in OpenSSH allows remote attackers to cause a denial of service (crash) by sending an invalid protocol sequence with USERAUTH_SUCCESS before NEWKEYS, which causes newkeys[mode] to be NULL.
- Record
CVE-2006-4925- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Updated
- 2026-11-02
CVE List No score
packet.c in ssh in OpenSSH allows remote attackers to cause a denial of service (crash) by sending an invalid protocol sequence with USERAUTH_SUCCESS before NEWKEYS, which causes newkeys[mode] to be NULL.
- Record
CVE-2006-4925- Updated
- 2026-11-02
EUVDEUVD-2006-4912 No score
packet.c in ssh in OpenSSH allows remote attackers to cause a denial of service (crash) by sending an invalid protocol sequence with USERAUTH_SUCCESS before NEWKEYS, which causes newkeys[mode] to be NULL.
- Record
EUVD-2006-4912- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-c5hw-qx35-fpg2 No score
packet.c in ssh in OpenSSH allows remote attackers to cause a denial of service (crash) by...
packet.c in ssh in OpenSSH allows remote attackers to cause a denial of service (crash) by sending an invalid protocol sequence with USERAUTH_SUCCESS before NEWKEYS, which causes newkeys[mode] to be NULL.
- Record
GHSA-c5hw-qx35-fpg2- Updated
- 2026-11-02
OSV No score
packet.c in ssh in OpenSSH allows remote attackers to cause a denial of service (crash) by sending an invalid protocol sequence with USERAUTH_SUCCESS before NEWKEYS, which causes newkeys[mode] to be NULL.
- Record
CVE-2006-4925- Updated
- 2026-11-02
OSVDEBIAN-CVE-2006-4925 No score
packet.c in ssh in OpenSSH allows remote attackers to cause a denial of service (crash) by sending an invalid protocol sequence with USERAUTH_SUCCESS before NEWKEYS, which causes newkeys[mode] to be NULL.
- Record
DEBIAN-CVE-2006-4925- Updated
- 2026-11-02
Affected products
Affected packages
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2006-4925 is a medium vulnerability (CVSS 5.0) in Openbsd Openssh, published September 29, 2006. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 15.0%, the 96th percentile. Fixed in openssh 1:5.1p1-5.
References
secunia.com/advisories/23038
securityfocus.com/archive/1/447861/100/200/threaded
novell.com/linux/security/advisories/2006_24_sr.html
issues.rpath.com/browse/RPL-681
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openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/packet.c.diff?r1=1.144&r2=1.145&f=h
openpkg.org/security/advisories/OpenPKG-SA-2006.022-openssh.html
bugs.gentoo.org/show_bug.cgi?id=148228
mandriva.com/security/advisories?name=MDKSA-2006:179
nvd.nist.gov/vuln/detail/CVE-2006-4925
github.com/advisories/GHSA-c5hw-qx35-fpg2
security-tracker.debian.org/tracker/CVE-2006-4925