HIGH
Memory leak in the SSLVPN feature in Cisco IOS 12.3 through 12.4 allows remote attackers to cause a denial of service (memory consumption and device crash) by disconnecting an SSL session in an abnormal manner, leading to a Transmission Control Block (TCB) leak
Published Mar 27, 2009
9.0
HIGHCVSS 2.0
EPSS 1.93%
Description
Memory leak in the SSLVPN feature in Cisco IOS 12.3 through 12.4 allows remote attackers to cause a denial of service (memory consumption and device crash) by disconnecting an SSL session in an abnormal manner, leading to a Transmission Control Block (TCB) leak.
Affected products
No data.
OR
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.3
- 12.4
- 12.4
- 12.4
- 12.4
- 12.4
- 12.4
- 12.4
- 12.4
- 12.4
- 12.4
- 12.4
- 12.4
- 12.4
- 12.4
- 12.4
- 12.4
- 12.4
- 12.4
- 12.4
- 12.4
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
9.0 HIGH NVD
AV:N/AC:L/Au:N/C:P/I:P/A:C
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Complete
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
1.93% 0.01925
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
EPSS probability 0.01925
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 1.93% (0.01925) | 79.24th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.93% (0.01925) | 77.23th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.39% (0.01393) | 79.07th | v4 (v2025.03.14) |
| Dec 12, 2024 | 2.12% (0.02117) | 89.62th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.12% (0.02117) | 87.40th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.41% (0.01408) | 72.89th | v2 (v2022.01.01) |
| Mar 2, 2023 | 1.41% (0.01408) | 72.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.41% (0.01408) | 70.87th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.41% (0.01408) | 49.94th | v2 (v2022.01.01) |
Weaknesses (1)
References (8)
- http://secunia.com/advisories/34438 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://securitytracker.com/id?1021896 vdb-entryx_refsource_SECTRACK
- http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90424.shtml vendor-advisoryx_refsource_CISCOVendor Advisory
- http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90469.shtml x_refsource_CONFIRMVendor Advisory
- http://www.securityfocus.com/bid/34239 vdb-entryx_refsource_BID
- http://www.vupen.com/english/advisories/2009/0851 vdb-entryx_refsource_VUPENVendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/49427 vdb-entryx_refsource_XF
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12092 vdb-entrysignaturex_refsource_OVAL
| Link | Providers | Tags |
|---|---|---|
| http://secunia.com/advisories/34438 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://securitytracker.com/id?1021896 | vdb-entryx_refsource_SECTRACK | |
| http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90424.shtml | vendor-advisoryx_refsource_CISCOVendor Advisory | |
| http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90469.shtml | x_refsource_CONFIRMVendor Advisory | |
| http://www.securityfocus.com/bid/34239 | vdb-entryx_refsource_BID | |
| http://www.vupen.com/english/advisories/2009/0851 | vdb-entryx_refsource_VUPENVendor Advisory | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/49427 | vdb-entryx_refsource_XF | |
| https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12092 | vdb-entrysignaturex_refsource_OVAL |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner cisco
Published Mar 27, 2009
Updated Aug 7, 2024
Reserved Feb 18, 2009
Link CVE-2009-0628
CISA Vulnrichment
Updated n/a