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CVE-2020-3307

17
FAUCET Score

CVE-2020-3307 describes a medium-severity vulnerability in the web UI of Cisco Firepower Management Center (FMC) Software, allowing an unauthenticated, remote attacker to write arbitrary entries to the log file. The vulnerability stems from insufficient input validation, enabling an attacker to send crafted HTTP requests and inject incorrect information into the system logs. While the CVSS score is 5.3 (Medium) and the FAUCET Risk Score is 18/100, the potential impact is limited to data integrity of the logs, with no compromise of confidentiality or availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage, indicating a low current threat level.

Impacted Technologies

VendorProductVersion(s)CPE
6.2.2CPE matchmatch criteria
cpe:2.3:a:cisco:secure_firewall_management_center:6.2.2:*:*:*:*:*:*:*
6.2.3CPE matchmatch criteria
cpe:2.3:a:cisco:secure_firewall_management_center:6.2.3:*:*:*:*:*:*:*
6.3.0CPE matchmatch criteria
cpe:2.3:a:cisco:secure_firewall_management_center:6.3.0:*:*:*:*:*:*:*
6.4.0CPE matchmatch criteria
cpe:2.3:a:cisco:secure_firewall_management_center:6.4.0:*:*:*:*:*:*:*
6.5.0CPE matchmatch criteria
cpe:2.3:a:cisco:secure_firewall_management_center:6.5.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.3MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.97%
Probability of exploitation in next 30 days
EPSS Percentile
58.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0097 is in the 36th percentile among its peer group of 23,725 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-alfo-tHwFDmTE
Vendor Advisory