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CVE-2021-1476

22
FAUCET Score

CVE-2021-1476 is a command injection vulnerability affecting Cisco ASA Software and FTD Software, allowing an authenticated, local attacker to execute arbitrary commands on the underlying OS with root privileges. The vulnerability stems from insufficient input validation in the CLI. While rated Medium severity (CVSS 6.7), exploitation requires valid administrator-level credentials and local access. There is no public exploit code, active exploitation, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 6.5.0, < 6.6.4CPE matchmatch criteria
cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
>= 6.7.0, < 6.7.0.2CPE matchmatch criteria
cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
>= 9.13, < 9.13.1.21CPE matchmatch criteria
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
>= 9.14, < 9.14.2.13CPE matchmatch criteria
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
>= 9.15, < 9.15.1.10CPE matchmatch criteria
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.7MEDIUM

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
0.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.48%
Probability of exploitation in next 30 days
EPSS Percentile
38.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0048 is in the 90th percentile among its peer group of 3,720 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 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-asa-ftd-cmd-inj-SELprvG
Vendor Advisory