CVE-2021-45067: Adobe Acrobat Reader Memory Corruption could lead to Information Disclosure
Noroxi assessment
Priority: Monitor (action score 23/100)
- Public proof-of-concept code exists (GitHub); there is no record of exploitation in the wild.
- Probability of exploitation in the next 30 days: 3.4% (FIRST EPSS); higher than 89.2% of all records.
- Someone with local access to the system can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
- According to the record, no fixed version is available yet.
- Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).
Low priority for now. Update when a fix is released; follow the vendor's advisory.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
Acrobat Reader DC version 21.007.20099 (and earlier), 20.004.30017 (and earlier) and 17.011.30204 (and earlier) are affected by an Access of Memory Location After End of Buffer 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 file.
- Published
- Jan 14, 2022
- Updated
- Jun 17, 2026
- EPSS
- 3.4% · 89th percentile
- CWE
- CWE-788
Report tools
Action score
23
Low priority for now.
- CVSS
- 22 / 40 · 5.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 3.4%
CNA vs NVD score
- NVD
- 5.5
- CNA · adobe
- 5.5
- agree
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- Proof of concept exists, no weaponized module
- No fixed version yet
If any of these changes, we'll tell you in the daily email digest.
Is your version affected? Check itNoroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| adobe | acrobat dc | cpe:2.3:a:adobe:acrobat_dc |
| adobe | acrobat reader dc | cpe:2.3:a:adobe:acrobat_reader_dc |
| adobe | acrobat | cpe:2.3:a:adobe:acrobat |
| adobe | acrobat reader | cpe:2.3:a:adobe:acrobat_reader |
| microsoft | windows | cpe:2.3:o:microsoft:windows |
| apple | macos | cpe:2.3:o:apple:macos |
Versions reported by the vendor
Affected version ranges reported by the assigning authority (adobe). Independent of NVD's CPE analysis and usually ahead of it.
Adobe Acrobat Reader
- unspecified and later · up to and including 21.007.20099affected
- unspecified and later · up to and including 20.004.30017affected
- unspecified and later · up to and including 17.011.30204affected
- unspecified and later · up to and including Noneaffected
Affected versions · NVD (6)
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- adobe acrobat17.011.30059 and later · up to 17.011.30204 inclusive
- adobe acrobat20.001.30005 and later · up to 20.004.30017 inclusive
- adobe acrobat dc15.008.20082 and later · up to 21.007.20099 inclusive
- adobe acrobat reader17.011.30059 and later · up to 17.011.30204 inclusive
- adobe acrobat reader20.001.30005 and later · up to 20.004.30017 inclusive
- adobe acrobat reader dc15.008.20082 and later · up to 21.007.20099 inclusive
Same product
adobe: all recordsOther highest-scoring records for the same primary product.
- CVE-2021-28550Adobe Acrobat Reader use after free vulnerability could lead to arbitrary code executionKEV81Now
- CVE-2023-21608Adobe Acrobat Reader DC resetForm Use-After-Free Remote Code Execution VulnerabilityKEV79This week
- CVE-2018-4990Adobe Acrobat and Reader versions 2018.011.20038 and earlier, 2017.011.30079 and earlier, and 2015.006.30417 and earlier have a Double Free…KEV76This week
Published before and after this one in the same product
- ← EarlierCVE-2021-45063Jan 14, 2022 · Adobe Acrobat Reader DC JP2 File Parsing Use-After-Free Information Disclosure Vulnerability24Monitor
- ← EarlierCVE-2021-45064Jan 14, 2022 · Adobe Acrobat Reader DC AcroForm Use-After-Free Remote Code Execution Vulnerability34Monitor
- Later →CVE-2021-45068Jan 14, 2022 · Adobe Acrobat Reader DC Font Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability35Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
Proof of concept available
A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.
Evidence
- Proof-of-concept repository on GitHub ×1
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Proof-of-concept repository on GitHub | stars:23 | 2022-10-13 |
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- Published
- First PoC+271 d
- TodayNov 12, 2026+1763 d
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-22-0051 · Jan 17, 2022(Adobe Acrobat Reader Zafiyeti)
Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- No account or password is required.
- A user must open a link or visit a page.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- none
- Availability
- none
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
CWE-788 · Access of Memory Location After End of BufferCVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log (0)
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.