CVE-2021-39856 (GCVE-0-2021-39856)

Vulnerability from cvelistv5 – Published: 2021-09-29 15:39 – Updated: 2024-09-16 19:56
VLAI?
Summary
Acrobat Reader DC ActiveX Control versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (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 visit an attacker controlled web page.
Severity ?
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CWE
  • CWE-200 - Information Exposure (CWE-200)
Assigner
References
Impacted products
Vendor Product Version
Adobe Acrobat Reader Affected: unspecified , ≤ 2020.004.30006 (custom)
Affected: unspecified , ≤ 2017.011.30199 (custom)
Affected: unspecified , ≤ 2021.005.20060 (custom)
Affected: unspecified , ≤ None (custom)
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  }
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.