Cisco Adaptive Security Appliance Software IPsec Denial of Service Vulnerability
Published May 3, 2019
8.6
HIGHCVSS 3.1
EPSS 1.07%
Description
A vulnerability in the software cryptography module of the Cisco Adaptive Security Virtual Appliance (ASAv) and Firepower 2100 Series running Cisco Adaptive Security Appliance (ASA) Software could allow an unauthenticated, remote attacker to cause an unexpected reload of the device that results in a denial of service (DoS) condition. The vulnerability is due to a logic error with how the software cryptography module handles IPsec sessions. An attacker could exploit this vulnerability by creating and sending traffic in a high number of IPsec sessions through the targeted device. A successful exploit could cause the device to reload and result in a DoS condition.
Affected products
-
- Version unspecifiedStatusaffectedConstraints<9.9.2.50
- 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 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Cisco | Cisco Adaptive Security Appliance (ASA) Software | n/a |
|
- ≥ 9.9 · ≤ 9.9.2.50
Running on/with
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
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.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
YesTechnical Impact
PartialDecision
n/aAssessed Nov 19, 2024 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 1.07% (0.01070) | 63.64th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.07% (0.01070) | 63.37th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.13% (0.00133) | 49.00th | v3 (v2023.03.01) |
| Jun 14, 2024 | 0.13% (0.00133) | 48.68th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.13% (0.00133) | 46.66th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.05% (0.01055) | 52.13th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.05% (0.01055) | 48.43th | v2 (v2022.01.01) |
| Feb 4, 2022 | 16.12% (0.16118) | 92.72th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.86% (0.02857) | 63.60th | v1 |
| Jan 6, 2022 | 2.86% (0.02857) | 63.25th | v1 |
| Jan 5, 2022 | 0.65% (0.00651) | 47.22th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.65% (0.00651) | 0.00th | v1 |
References (1)
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-asa-ipsec-dos vendor-advisoryx_refsource_CISCOVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-asa-ipsec-dos | vendor-advisoryx_refsource_CISCOVendor Advisory |
Change history (0)
No recorded changes yet.