CVE-2021-44739 json
Adobe Acrobat Reader DC add-on (AxAcroPDFLib.AxAcroPDF) src NTLMv2 SSO Auth leak vulnerability
published 2022-01-14 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-31554
- cvss
- 3.1
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.0%
- EPSS 2.0% chance of exploitation in 30 days, percentile 81%
- public exploits
- 0
- none known
Summary
Acrobat Reader DC ActiveX Control versions 21.007.20099 (and earlier), 20.004.30017 (and earlier) and 17.011.30204 (and earlier) are affected by an Information Disclosure vulnerability. An unauthenticated attacker could leverage this vulnerability to obtain NTLMv2 credentials. Exploitation of this issue requires user interaction in that a victim must open a maliciously crafted Microsoft Office file, or visit an attacker controlled web page.
Patch / fix
Exploit prediction
2.03% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 3.1 | CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N |
| NVD | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:P/I:N/A:N |
Affected products
- Adobe Acrobat Reader
Classification
- Weakness
-
- CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
References
-
helpx.adobe.com
/security/products/acrobat/apsb22-01.html
patch, vendor-advisory
Sources
- CVE List CVE-2021-44739
- NVD CVE-2021-44739
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