CVE-2020-3311Network attack vector

Open redirect via unvalidated HTTP parameters

Published May 6, 2020 · Updated Nov 15, 2024

Open redirect in the web interface of Cisco Firepower Management Center before 6.3.0 allows remote attackers to redirect users. The interface improperly validates HTTP request parameters, letting a man-in-the-middle attacker modify an intercepted request to select a malicious destination. Exploitation requires intercepting and modifying a user's request and user interaction, and the reported consequence is redirection to a malicious web page.

CVSS severity4.3
Medium
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

Open redirect in the web interface of Cisco Firepower Management Center before 6.3.0 allows remote attackers to redirect users. The interface improperly validates HTTP request parameters, letting a man-in-the-middle attacker modify an intercepted request to select a malicious destination. Exploitation requires intercepting and modifying a user's request and user interaction, and the reported consequence is redirection to a malicious web page.

The record

CVE
CVE-2020-3311
Published
May 6, 2020
Updated
Nov 15, 2024
Vendor
ClamAV
Product
Cisco Firepower Management Center
Classifications
CWE-601
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 6, 2020CVE publishedPublication date reported by the CVE source.
  2. Nov 15, 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?

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  1. Affected versionversion=n/a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ClamAV · Cisco Firepower Management Centerversion=n/a

Published CVSS scores

4.3CiscoCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:X/RL:X/RC:X

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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-601URL Redirection to Untrusted Site ('Open Redirect')

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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