CVE-2020-3178Network attack vector

Phishing redirects via unvalidated HTTP parameters

Published May 6, 2020 · Updated Nov 15, 2024

Open redirects in Cisco AsyncOS for Content Security Management Appliance before 13.6 allow remote attackers to redirect users. The web GUI accepts modified HTTP request parameters without sufficient validation and uses them to select a malicious destination URL. Exploitation requires interception and alteration of a user's HTTP request, enabling phishing redirects and exposure of sensitive browser-based information.

CVSS severity6.1
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 redirects in Cisco AsyncOS for Content Security Management Appliance before 13.6 allow remote attackers to redirect users. The web GUI accepts modified HTTP request parameters without sufficient validation and uses them to select a malicious destination URL. Exploitation requires interception and alteration of a user's HTTP request, enabling phishing redirects and exposure of sensitive browser-based information.

The record

CVE
CVE-2020-3178
Published
May 6, 2020
Updated
Nov 15, 2024
Vendor
ClamAV
Product
Cisco Content Security Management Appliance
Classifications
CWE-601, T1566.002
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 Content Security Management Applianceversion=n/a

Published CVSS scores

6.1CiscoCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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.

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

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')
T1566.002Spearphishing Link

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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