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TI-2021-09707 Aliases CVE-2021-28637GHSA-7r6j-qg45-9hfg

Adobe Acrobat Pro DC PDFLibTool Out-of-Bounds Read Remote Code Execution Vulnerability

Priority LOW 39CWE-125Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

Acrobat Reader DC versions 2021.005.20054 (and earlier), 2020.004.30005 (and earlier) and 2017.011.30197 (and earlier) are affected by an out-of-bounds read vulnerability. An unauthenticated attacker could leverage this vulnerability achieve arbitrary read / write system information in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Why it matters now

EPSS 0.02852 86th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
AdobeAcrobat Readerup to 2020.004.30005; up to 2017.011.30197; up to 2021.005.20054; up to None—No fix listedCNA
  • Acrobat Reader VendorAdobe Affected up to 2020.004.30005; up to 2017.011.30197; up to 2021.005.20054; up to None Fixed in — No fix listed CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:*15.008.20082 – 21.005.20054VulnerableAdobe
cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:classic:*:*:*17.011.30059 – 17.011.30197; 20.001.30005 – 20.004.30005VulnerableAdobe
cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:*15.008.20082 – 21.005.20054VulnerableAdobe
cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:classic:*:*:*17.011.30059 – 17.011.30197; 20.001.30005 – 20.004.30005VulnerableAdobe
  • cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:* Versions 15.008.20082 – 21.005.20054 Vulnerable ·Adobe
  • cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:classic:*:*:* Versions 17.011.30059 – 17.011.30197; 20.001.30005 – 20.004.30005 Vulnerable ·Adobe
  • cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:* Versions 15.008.20082 – 21.005.20054 Vulnerable ·Adobe
  • cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:classic:*:*:* Versions 17.011.30059 – 17.011.30197; 20.001.30005 – 20.004.30005 Vulnerable ·Adobe

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-28637
  2. 2026-10-03 Alias added: GHSA-7r6j-qg45-9hfg

References

Advisory 1

  • TI-2021-09626 Adobe Acrobat Reader use after free vulnerability could lead to arbitrary code execution KEVCVSS 3.1HIGH 8.8
  • TI-2021-04123 Acrobat Reader DC Heap-based Buffer Overflow Vulnerability Could Lead To Arbitrary Code Execution KEVCVSS 3.1HIGH 8.8
  • TI-2018-03558 Double free in Adobe Acrobat and Reader 2018.011.20038 and earlier, 2017.011.30079 and… KEVCVSS 3.1HIGH 8.8
  • TI-2026-26867 Acrobat Reader | Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') (CWE-1321) KEVCVSS 3.1HIGH 8.6
  • TI-2023-11518 [Google Project Zero] Adobe Acrobat DC OOBW 0-day actively exploited in the wild KEVCVSS 3.1HIGH 7.8
  • TI-2023-07999 Adobe Acrobat Reader DC resetForm Use-After-Free Remote Code Execution Vulnerability KEVCVSS 3.1HIGH 7.8
See all 1831 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences