CVE-2016-6420
Cisco FireSIGHT System Software 4.10.3 through 5.4.0 in Firepower Management Center allows remote...
Cisco FireSIGHT System Software 4.10.3 through 5.4.0 in Firepower Management Center allows remote authenticated users to bypass authorization checks and gain privileges via a crafted HTTP request, aka Bug ID CSCur25467.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
Cisco FireSIGHT System Software 4.10.3 through 5.4.0 in Firepower Management Center allows remote authenticated users to bypass authorization checks and gain privileges via a crafted HTTP request, aka Bug ID CSCur25467.
- Record
CVE-2016-6420- CVSS 3.0
- 6.5 Medium
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 6.8 Medium
AV:N/AC:L/Au:S/C:C/I:N/A:N - Weakness
- CWE-200, CWE-264
- Updated
- 2026-11-02
CVE List No score
Cisco FireSIGHT System Software 4.10.3 through 5.4.0 in Firepower Management Center allows remote authenticated users to bypass authorization checks and gain privileges via a crafted HTTP request, aka Bug ID CSCur25467.
- Record
CVE-2016-6420- Updated
- 2026-11-02
EUVDEUVD-2016-7343 No score
Cisco FireSIGHT System Software 4.10.3 through 5.4.0 in Firepower Management Center allows remote authenticated users to bypass authorization checks and gain privileges via a crafted HTTP request, aka Bug ID CSCur25467.
- Record
EUVD-2016-7343- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-r4rh-wx3c-837c
Cisco FireSIGHT System Software 4.10.3 through 5.4.0 in Firepower Management Center allows remote...
Cisco FireSIGHT System Software 4.10.3 through 5.4.0 in Firepower Management Center allows remote authenticated users to bypass authorization checks and gain privileges via a crafted HTTP request, aka Bug ID CSCur25467.
- Record
GHSA-r4rh-wx3c-837c- CVSS 3.0
- 6.5 Medium
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2016-6420 is a medium vulnerability (CVSS 6.5) in Cisco Firesight System Software, published October 5, 2016. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.84%, the 79th percentile. No source names a fixed version.