CVE-2021-1257Network attack vector

Privileged actions via insufficient CSRF protections

Published Jan 20, 2021 · Updated Nov 12, 2024

Cross-site request forgery in Cisco DNA Center before 2.1.1.0 allows remote attackers to perform privileged actions through a crafted link. The web interface applies insufficient CSRF protections to state-changing requests, allowing a crafted link to submit them with the user's privileges. Exploitation requires an authenticated management user to follow the link and can modify configuration, disconnect the session, or run Command Runner commands.

CVSS severity7.1
High
EPSS probability0.84%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site request forgery in Cisco DNA Center before 2.1.1.0 allows remote attackers to perform privileged actions through a crafted link. The web interface applies insufficient CSRF protections to state-changing requests, allowing a crafted link to submit them with the user's privileges. Exploitation requires an authenticated management user to follow the link and can modify configuration, disconnect the session, or run Command Runner commands.

The record

CVE
CVE-2021-1257
Published
Jan 20, 2021
Updated
Nov 12, 2024
Vendor
ClamAV
Product
Cisco Catalyst Center
Classifications
CWE-352, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 20, 2021CVE publishedPublication date reported by the CVE source.
  2. Nov 12, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ClamAV · Cisco Catalyst Centerversion=n/a

Published CVSS scores

7.1CiscoCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:L
6.8NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
8.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1204.001Malicious Link

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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