Adobe Acrobat Reader DC PDF Out-of-Bound Read Vulnerability Information Disclosure
Priority LOW 23CWE-125Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-125 and the CVSS impact.
Summary
Adobe Acrobat Reader DC version 21.007.20095 (and earlier), 21.007.20096 (and earlier), 20.004.30015 (and earlier), and 17.011.30202 (and earlier) is affected by a out-of-bounds read vulnerability that could lead to disclosure of sensitive memory. An attacker could leverage this vulnerability to bypass mitigations such as ASLR. Exploitation of this issue requires user interaction in that a victim must open a malicious PDF file.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0428 91st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Adobe | Acrobat Reader | up to 21.007.20095; up to 21.007.20096; up to 20.004.30015; up to 17.011.30202 | — | No fix listed | CNA |
- Acrobat Reader VendorAdobe Affected up to 21.007.20095; up to 21.007.20096; up to 20.004.30015; up to 17.011.30202 Fixed in — No fix listed CNA
CPE configurations NVD · 10
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:* | 15.008.20082 – 21.007.20095 | Vulnerable | Adobe |
| cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:* | 15.008.20082 – 21.007.20095 | Vulnerable | Adobe |
| cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:* | 15.008.20082 – 21.007.20096 | Vulnerable | Adobe |
| cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:* | 15.008.20082 – 21.007.20096 | Vulnerable | Adobe |
| cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Apple |
| cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:* | 20.001.30005 – 20.004.30015 | Vulnerable | Adobe |
| cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:classic:*:*:* | 20.001.30005 – 20.004.30015 | Vulnerable | Adobe |
| cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:* | 17.011.30158 – 17.011.30202 | Vulnerable | Adobe |
| cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:classic:*:*:* | 17.011.30158 – 17.011.30202 | Vulnerable | Adobe |
- cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:* Versions 15.008.20082 – 21.007.20095 Vulnerable ·Adobe
- cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:* Versions 15.008.20082 – 21.007.20095 Vulnerable ·Adobe
- cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:* Versions 15.008.20082 – 21.007.20096 Vulnerable ·Adobe
- cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:* Versions 15.008.20082 – 21.007.20096 Vulnerable ·Adobe
- cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Apple
- cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:* Versions 20.001.30005 – 20.004.30015 Vulnerable ·Adobe
- cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:classic:*:*:* Versions 20.001.30005 – 20.004.30015 Vulnerable ·Adobe
- cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:* Versions 17.011.30158 – 17.011.30202 Vulnerable ·Adobe
- cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:classic:*:*:* Versions 17.011.30158 – 17.011.30202 Vulnerable ·Adobe
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-40729
- 2026-10-03 Alias added: GHSA-h98h-qp56-wrjw
References
More Adobe Acrobat vulnerabilities
- TI-2014-00524 Adobe Reader and Acrobat 10.x before 10.1.11 and 11.x before 11.0.08 on Windows allow… KEVCVSS 3.1CRITICAL 9.8
- TI-2013-02915 Adobe Reader and Acrobat 9.x before 9.5.5, 10.x before 10.1.7, and 11.x before 11.0.03… KEVCVSS 3.1CRITICAL 9.8
- TI-2013-02389 Integer overflow in Adobe Reader and Acrobat 9.x before 9.5.5, 10.x before 10.1.7, and… KEVCVSS 3.1CRITICAL 9.8
- TI-2011-02156 Unspecified vulnerability in the U3D component in Adobe Reader and Acrobat 10.1.1 and… KEVCVSS 3.1CRITICAL 9.8
- 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
Sources
- CVE-2021-40729 · CVE Program
- CVE-2021-40729 · NVD
- FIRST EPSS
- GHSA-h98h-qp56-wrjw · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences