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CVE-2021-1263

26
FAUCET Score

CVE-2021-1263 describes multiple command injection vulnerabilities in Cisco SD-WAN products. An authenticated attacker could exploit these flaws to execute commands with root privileges on the affected device. With a CVSS score of 7.8 (High), the vulnerability requires local access and low privileges, but successful exploitation grants high confidentiality, integrity, and availability impacts. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
18.2.0CPE matchmatch criteria
cpe:2.3:o:cisco:sd-wan_firmware:18.2.0:*:*:*:*:*:*:*
18.3.0CPE matchmatch criteria
cpe:2.3:o:cisco:sd-wan_firmware:18.3.0:*:*:*:*:*:*:*
18.3.8CPE matchmatch criteria
cpe:2.3:o:cisco:sd-wan_firmware:18.3.8:*:*:*:*:*:*:*
18.4.6CPE matchmatch criteria
cpe:2.3:o:cisco:sd-wan_firmware:18.4.6:*:*:*:*:*:*:*
19.2.3CPE matchmatch criteria
cpe:2.3:o:cisco:sd-wan_firmware:19.2.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
5.2
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.44%
Probability of exploitation in next 30 days
EPSS Percentile
70.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0144 is in the 95th percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 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-sdwan-cmdinjm-9QMSmgcn
Vendor Advisory