A vulnerability in the detection engine reassembly of HTTP packets for Cisco Firepower System Software before 6.0.1 could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition due to the Snort process unexpectedly restarting
Published Oct 27, 2016
7.5
HIGHCVSS 3.0
EPSS 1.63%
Description
A vulnerability in the detection engine reassembly of HTTP packets for Cisco Firepower System Software before 6.0.1 could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition due to the Snort process unexpectedly restarting. The vulnerability is due to improper handling of an HTTP packet stream. An attacker could exploit this vulnerability by sending a crafted HTTP packet stream to the detection engine on the targeted device. An exploit could allow the attacker to cause a DoS condition if the Snort process restarts and traffic inspection is bypassed or traffic is dropped.
Affected products
- Vendor n/a Product Cisco Firepower System Software before 6.0.1 Defaultn/a
- Version Cisco Firepower System Software before 6.0.1StatusaffectedConstraints-
- 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 Firepower System Software before 6.0.1 | n/a |
|
- 5.3.0
- 5.3.0.2
- 5.3.0.3
- 5.3.0.4
- 5.3.1
- 5.3.1.3
- 5.3.1.4
- 5.3.1.5
- 5.3.1.6
- 5.4.0
- 5.4.0.2
- 5.4.1
- 5.4.1.1
- 5.4.1.2
- 5.4.1.3
- 5.4.1.4
- 5.4.1.5
- 5.4.1.6
- 5.4_base
- 6.0.0
- 6.0.0.0
- 6.0.0.1
- 6.0.1
- 6.0_base
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:U/C:N/I:N/A:H
AV:N/AC:M/Au:N/C:N/I:N/A:P
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
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.63% (0.01633) | 75.39th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.63% (0.01633) | 73.09th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.17% (0.00169) | 35.68th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.28% (0.00278) | 69.12th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.28% (0.00278) | 67.35th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.28% (0.00278) | 63.25th | 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) |
References (3)
- http://www.securityfocus.com/bid/93787 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1037061 vdb-entryx_refsource_SECTRACK
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161019-fpsnort x_refsource_CONFIRMVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/93787 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id/1037061 | vdb-entryx_refsource_SECTRACK | |
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161019-fpsnort | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.