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CVE-2009-1386

77
FAUCET Score

CVE-2009-1386 describes a denial-of-service vulnerability in OpenSSL versions prior to 0.9.8i, affecting various distributions including Canonical and Red Hat. This flaw allows a remote attacker to crash the daemon via a DTLS ChangeCipherSpec packet sent before the ClientHello. With a CVSS score of 5.0 (AV:N/AC:L/Au:N/C:N/I:N/A:P), it is easily exploitable over the network with low attack complexity, leading to a partial denial of service. While not on the KEV catalog, exploit code exists, including a Metasploit module and an ExploitDB entry, though there is minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
> 0.9.8, < 0.9.8iCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
0.9.6-15CPE matchmatch criteria
cpe:2.3:a:redhat:openssl:0.9.6-15:*:*:*:*:*:*:*
0.9.6b-3CPE matchmatch criteria
cpe:2.3:a:redhat:openssl:0.9.6b-3:*:*:*:*:*:*:*
0.9.7a-2CPE matchmatch criteria
cpe:2.3:a:redhat:openssl:0.9.7a-2:*:*:*:*:*:*:*
6.06CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
80.13%
Probability of exploitation in next 30 days
EPSS Percentile
99.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Metasploit: OpenSSL DTLS ChangeCipherSpec Remote DoS · Apr 26, 2000
ExploitDB: EDB-8873 · Jun 4, 2009
This CVE's current EPSS score of 0.8013 is in the 100th percentile among its peer group of 23,701 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: openssl-0:0.9.8e-12.el5
View patch

Vendor Advisories (1)

redhatCVE-2009-1386Moderate

openssl: DTLS NULL deref crash on early ChangeCipherSpec request

Jun 2, 2009

References

ftp.netbsd.org / pub/NetBSD/security/advisories/NetBSD-SA2009-009.txt.asc
Broken LinkThird Party Advisory
cvs.openssl.org / chngview
Broken LinkPatchThird Party Advisory
h20000.www2.hp.com / bizsupport/TechSupport/Document.jsp
Broken LinkThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2009-07/msg00002.html
Third Party Advisory
lists.vmware.com / pipermail/security-announce/2010/000082.html
Mailing ListThird Party Advisory
rt.openssl.org / Ticket/Display.html
Third Party AdvisoryVendor Advisory
secunia.com / advisories/35571
Not ApplicableThird Party Advisory
secunia.com / advisories/35685
Not ApplicableThird Party Advisory
secunia.com / advisories/35729
Not ApplicableThird Party Advisory
secunia.com / advisories/36533
Not ApplicableThird Party Advisory
secunia.com / advisories/38794
Not ApplicableThird Party Advisory
secunia.com / advisories/38834
Third Party Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/50963
Third Party AdvisoryVDB Entry
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11179
Broken LinkTool Signature
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7469
Broken LinkTool Signature
exploit-db.com / exploits/8873
ExploitThird Party AdvisoryVDB Entry
openwall.com / lists/oss-security/2009/06/02/1
Mailing ListThird Party Advisory
redhat.com / support/errata/RHSA-2009-1335.html
Third Party Advisory
securityfocus.com / bid/35174
Broken LinkExploitThird Party AdvisoryVDB Entry
ubuntu.com / usn/USN-792-1
Third Party Advisory
vupen.com / english/advisories/2010/0528
Permissions RequiredThird Party Advisory