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CVE-2021-1298

28
FAUCET Score

CVE-2021-1298 describes multiple command injection vulnerabilities in Cisco SD-WAN products. An authenticated attacker can exploit these flaws to execute commands with root privileges, potentially leading to full compromise of the affected device. With a CVSS score of 8.8 (High), this vulnerability is easily exploitable over the network with low attack complexity and requires only low privileges, resulting in high impacts to confidentiality, integrity, and availability. While no public exploits or active exploitation have been observed, and community discussion is minimal, organizations using Cisco SD-WAN products should prioritize patching.

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
2.37%
Probability of exploitation in next 30 days
EPSS Percentile
82.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0237 is in the 81st percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 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 0.1 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-sdwan-cmdinjm-9QMSmgcn
Vendor Advisory