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CVE-2021-1512

21
FAUCET Score

CVE-2021-1512 is a medium-severity vulnerability in the CLI of Cisco SD-WAN Software that allows an authenticated, local attacker to overwrite arbitrary files due to insufficient input validation. A successful exploit could lead to data integrity and availability impacts on the underlying host file system. There is no public exploit code available, and the vulnerability shows no signs of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
>= 19.2, < 19.2.3CPE matchmatch criteria
cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*
>= 20.3, < 20.3.1CPE matchmatch criteria
cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*
>= 20.4, < 20.4.1CPE matchmatch criteria
cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*
>= 20.5, < 20.5.1CPE matchmatch criteria
cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:cisco:sd-wan_vbond_orchestrator:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.4MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
0.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.23%
Probability of exploitation in next 30 days
EPSS Percentile
13.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0023 is in the 58th 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-sdwan-arbfile-7Qhd9mCn
Vendor Advisory