A vulnerability in the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) code of Cisco ASA Software could allow an unauthenticated, remote attacker to cause a reload of the affected system
Published Apr 20, 2017
8.6
HIGHCVSS 3.0
EPSS 4.55%
Description
A vulnerability in the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) code of Cisco ASA Software could allow an unauthenticated, remote attacker to cause a reload of the affected system. The vulnerability is due to improper parsing of crafted SSL or TLS packets. An attacker could exploit this vulnerability by sending a crafted packet to the affected system. Note: Only traffic directed to the affected system can be used to exploit this vulnerability. This vulnerability affects systems configured in routed and transparent firewall mode and in single or multiple context mode. This vulnerability can be triggered by IPv4 and IPv6 traffic. A valid SSL or TLS session is needed to exploit this vulnerability. This vulnerability affects Cisco ASA Software running on the following products: Cisco ASA 1000V Cloud Firewall, Cisco ASA 5500 Series Adaptive Security Appliances, Cisco ASA 5500-X Series Next-Generation Firewalls, Cisco ASA Services Module for Cisco Catalyst 6500 Series Switches and Cisco 7600 Series Routers, Cisco Adaptive Security Virtual Appliance (ASAv), Cisco Firepower 9300 ASA Security Module, Cisco ISA 3000 Industrial Security Appliance. Fixed versions: 8.4(7.31) 9.0(4.39) 9.1(7) 9.2(4.6) 9.3(3.8) 9.4(2) 9.5(2). Cisco Bug IDs: CSCuv48243.
Affected products
- Vendor n/a Product Cisco ASA Software Defaultn/a
- Version Cisco ASA SoftwareStatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | Cisco ASA Software | n/a |
|
- 9.0.1
- 9.0.2
- 9.0.2.10
- 9.0.3
- 9.0.3.6
- 9.0.3.8
- 9.0.4
- 9.0.4.1
- 9.0.4.5
- 9.0.4.7
- 9.0.4.17
- 9.0.4.20
- 9.0.4.24
- 9.0.4.26
- 9.0.4.29
- 9.0.4.33
- 9.0.4.35
- 9.0.4.37
- 9.1.1
- 9.1.1.4
- 9.1.2
- 9.1.2.8
- 9.1.3
- 9.1.3.2
- 9.1.4
- 9.1.4.5
- 9.1.5
- 9.1.5.10
- 9.1.5.12
- 9.1.5.15
- 9.1.5.21
- 9.1.6
- 9.1.6.1
- 9.1.6.4
- 9.1.6.6
- 9.1.6.8
- 9.1.6.10
- 9.2\(0.0\)
- 9.2\(0.104\)
- 9.2\(3.1\)
- 9.2.1
- 9.2.2
- 9.2.2.4
- 9.2.2.7
- 9.2.2.8
- 9.2.3
- 9.2.3.3
- 9.2.3.4
- 9.2.4
- 9.2.4.2
- 9.2.4.4
- 9.3\(1.50\)
- 9.3\(1.105\)
- 9.3\(2.100\)
- 9.3\(2.243\)
- 9.3.1
- 9.3.1.1
- 9.3.2
- 9.3.2.2
- 9.3.3
- 9.3.3.1
- 9.3.3.2
- 9.3.3.5
- 9.3.3.6
- 9.4.0.115
- 9.4.1
- 9.4.1.1
- 9.4.1.2
- 9.4.1.3
- 9.4.1.5
- 9.5.1
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.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
AV:N/AC:L/Au:N/C:N/I:N/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 4.55% (0.04553) | 91.30th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.55% (0.04553) | 90.34th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.26% (0.00257) | 65.89th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.26% (0.00257) | 64.54th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.26% (0.00257) | 61.71th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.14% (0.01136) | 59.45th | v2 (v2022.01.01) |
| Oct 18, 2022 | 1.14% (0.01136) | 58.28th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.14% (0.01136) | 56.27th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.14% (0.01136) | 34.23th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.05% (0.01046) | 28.66th | v1 |
| Jan 6, 2022 | 1.05% (0.01046) | 28.03th | v1 |
| Sep 1, 2021 | 1.05% (0.01046) | 65.02th | v1 |
| Apr 14, 2021 | 1.05% (0.01046) | 0.00th | v1 |
References (3)
- http://www.securityfocus.com/bid/97937 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1038315 vdb-entryx_refsource_SECTRACK
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170419-asa-tls x_refsource_CONFIRMVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/97937 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1038315 | vdb-entryx_refsource_SECTRACK | |
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170419-asa-tls | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.