NTLMv2 credential disclosure via ActiveX control
Published Jan 14, 2022 · Updated Sep 16, 2024
Information disclosure in Adobe Acrobat Reader DC ActiveX Control before 21.007.20099 allows unauthenticated attackers to obtain NTLMv2 credentials. The AxAcroPDF ActiveX component initiates an NTLM authentication request when handling attacker-controlled Office content or a web page, exposing the resulting challenge-response material. Exploitation requires a victim to open a malicious Office file or visit an attacker-controlled page; the documented impact is credential disclosure rather than code execution or service interruption.
Summary
What happened
Information disclosure in Adobe Acrobat Reader DC ActiveX Control before 21.007.20099 allows unauthenticated attackers to obtain NTLMv2 credentials. The AxAcroPDF ActiveX component initiates an NTLM authentication request when handling attacker-controlled Office content or a web page, exposing the resulting challenge-response material. Exploitation requires a victim to open a malicious Office file or visit an attacker-controlled page; the documented impact is credential disclosure rather than code execution or service interruption.
The record
- CVE
- CVE-2021-44739
- Published
- Jan 14, 2022
- Updated
- Sep 16, 2024
- Vendor
- Adobe
- Product
- Adobe Acrobat Reader
- Classifications
- CWE-200, T1189
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 14, 2022CVE publishedPublication date reported by the CVE source.
- Sep 16, 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.
- Affected versionversion=unspecified <=17.011.30204
- Affected versionversion=unspecified <=20.004.30017
- Affected versionversion=unspecified <=21.007.20099
- Affected versionversion=unspecified <=None
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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