CVE-2021-1218Network attack vector

User redirection via unvalidated URL parameters

Published Jan 20, 2021 · Updated Nov 12, 2024

Open redirect in Cisco Smart Software Manager On-Prem 5.0 and earlier allows remote authenticated users to redirect other users to malicious sites. The web management interface accepts URL parameters in crafted HTTP requests without validating the redirect destination. Exploitation requires authenticated access and user interaction, and the bounded impact is redirection to an attacker-chosen website.

CVSS severity4.6
Medium
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Open redirect in Cisco Smart Software Manager On-Prem 5.0 and earlier allows remote authenticated users to redirect other users to malicious sites. The web management interface accepts URL parameters in crafted HTTP requests without validating the redirect destination. Exploitation requires authenticated access and user interaction, and the bounded impact is redirection to an attacker-chosen website.

The record

CVE
CVE-2021-1218
Published
Jan 20, 2021
Updated
Nov 12, 2024
Vendor
ClamAV
Product
Cisco Smart Software Manager On-Prem
Classifications
CWE-601, CAPEC-178
Attack vector
network
Privileges
authenticated

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 privilegesauthenticated

What is affected?

ClamAV · Cisco Smart Software Manager On-Premversion=n/a

Published CVSS scores

4.9NIST NVDAV:N/AC:M/Au:S/C:P/I:P/A:N
4.6Cisco Systems, Inc.CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N/E:X/RL:X/RC:X
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-601URL Redirection to Untrusted Site ('Open Redirect')
CAPEC-178Cross-Site Flashing

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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