CVE-2021-21009Network attack vector

Sensitive-information disclosure via server-side request forgery

Published Jan 13, 2021 · Updated Apr 23, 2025

Server-side request forgery in Adobe Campaign Classic affected releases allows remote attackers to disclose sensitive information. The Campaign instance issues unauthorized requests to internal or external resources, but Adobe has not disclosed the affected component or input-validation failure. Network access without authentication is sufficient, and the documented consequence is limited to sensitive-information disclosure.

CVSS severity8.6
High
EPSS probability3.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Server-side request forgery in Adobe Campaign Classic affected releases allows remote attackers to disclose sensitive information. The Campaign instance issues unauthorized requests to internal or external resources, but Adobe has not disclosed the affected component or input-validation failure. Network access without authentication is sufficient, and the documented consequence is limited to sensitive-information disclosure.

The record

CVE
CVE-2021-21009
Published
Jan 13, 2021
Updated
Apr 23, 2025
Vendor
Adobe
Product
Adobe Campaign
Classifications
CWE-918
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 13, 2021CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=unspecified <=19.1.7 and earlier
  2. Affected versionversion=unspecified <=19.2.3 and earlier
  3. Affected versionversion=unspecified <=20.1.3 and earlier
  4. Affected versionversion=unspecified <=20.2.3 and earlier
  5. Affected versionversion=unspecified <=20.3.1 and earlier
  6. Affected versionversion=unspecified <=Gold Standard 10 and earlier

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Adobe · Adobe Campaignversion=unspecified <=19.1.7 and earlier; version=unspecified <=19.2.3 and earlier; version=unspecified <=20.1.3 and earlier; version=unspecified <=20.2.3 and earlier; version=unspecified <=20.3.1 and earlier; version=unspecified <=Gold Standard 10 and earlier

Published CVSS scores

5.0NISTAV:N/AC:L/Au:N/C:P/I:N/A:N
8.6AdobeCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)

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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