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CVE-2021-1479

32
FAUCET Score

CVE-2021-1479 is a critical vulnerability affecting Cisco SD-WAN vManage Software and Cisco Catalyst SD-WAN Manager. It allows an unauthenticated, remote attacker to execute arbitrary code or an authenticated, local attacker to gain escalated privileges. With a CVSS score of 9.8 (Critical), this vulnerability has a low attack complexity and can lead to complete compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community attention with 12 mentions and two media articles, indicating high awareness.

Impacted Technologies

VendorProductVersion(s)CPE
>= 20.4, < 20.4.1CPE matchmatch criteria
cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*
< 19.2.4CPE matchmatch criteria
cpe:2.3:a:cisco:sd-wan_vmanage:*:*:*:*:*:*:*:*
>= 19.3, < 20.3.3CPE matchmatch criteria
cpe:2.3:a:cisco:sd-wan_vmanage:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.93%
Probability of exploitation in next 30 days
EPSS Percentile
77.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0193 is in the 66th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

ciscopatch availablevia nvd_reference
View patch

References

tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-vmanage-YuTVWqy
PatchVendor Advisory