CVE-2025-27159
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedAcrobat Reader versions 24.001.30225, 20.005.30748, 25.001.20428 and earlier are affected by a Use After Free vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceThis is a Use After Free (UAF) vulnerability in Adobe Acrobat Reader that allows arbitrary code execution when a victim opens a specially crafted malicious PDF file. The vulnerability stems from improper memory management where memory is freed but pointers to it are still referenced, potentially allowing an attacker to manipulate memory and execute arbitrary code with the current user's privileges.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data>= 20.001.30002, < 20.005.30763>= 24.0.0, < 24.001.30235>= 15.008.20082, < 25.001.20432>= 20.001.30002, < 20.005.30763>= 15.008.20082, < 25.001.20432CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Local
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Locate installed Adobe Acrobat or Reader versionOn Windows, open Registry Editor and navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Adobe\Acrobat\_Installation\CurrentVersion or HKEY_LOCAL_MACHINE\SOFTWARE\Adobe\Acrobat Reader\CurrentVersion. Alternatively, open the application, go to Help > About Adobe Acrobat/Reader to view the exact version number.Affected if The installed version falls within these ranges: 20.001.30002 through 20.005.30762, 24.0.0 through 24.001.30234, or 15.008.20082 through 25.001.20431 (for DC variants).
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Identify the exact product variant and buildCheck the product name and full version string from the About dialog or registry key. For DC variants, the version format differs (15.x for Classic, 24.x/25.x for Continous). Compare the full version number including the four-digit build suffix against the affected ranges.Affected if The full version string matches any of the vulnerable version ranges listed in the CVE.
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Verify the application is actively installed and executableConfirm the Acrobat/Reader executable exists at typical paths such as C:\Program Files\Adobe\Acrobat DC\Acrobat\Acrobat.exe or C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32.exe. Check that the file size and timestamp are consistent with a valid installation.Affected if The vulnerable version executable is present and appears to be a functioning installation rather than a removed or corrupted remnant.
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Determine if PDF file handling is enabledAttempt to open a benign PDF file with the installed Adobe product or check file association settings in Windows under Settings > Apps > Default Apps > Choose default apps by file type to confirm .pdf files are associated with Adobe Acrobat/Reader.Affected if PDF files are associated with the vulnerable Adobe product, meaning the application would be invoked when opening a malicious PDF.
You are affected if Adobe Acrobat or Acrobat Reader is installed with a version number matching any of the vulnerable ranges (20.001.30002 to 20.005.30762, 24.0.0 to 24.001.30234, or 15.008.20082 to 25.001.20431 depending on product variant), and the application handles PDF files in your environment.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped20.005.3076324.001.3023525.001.20432
Update Adobe Acrobat Reader to a version newer than 24.001.30225, 20.005.30748, or 25.001.20428. Additionally, educate users to avoid opening PDF files from untrusted sources and consider deploying additional endpoint detection controls.
Adobe Acrobat/Reader 20.005.30763+ (2020), 24.001.30235+ (2024), or 25.001.20432+ (2025) depending on your release track
- Identify the installed Adobe Acrobat or Reader version by navigating to Help > About (or pressing Ctrl+Ctrl on the keyboard)
- For Acrobat/Reader 20.x (2020 release): Upgrade to version 20.005.30763 or later
- For Acrobat/Reader 24.x (2024 release): Upgrade to version 24.001.30235 or later
- For Acrobat/Reader 25.x (2025 release): Upgrade to version 25.001.20432 or later
- Download the latest version from the official Adobe website at https://get.adobe.com/reader/ or https://get.adobe.com/acrobat/
- Run the installer with administrator privileges and complete the installation
- Restart Adobe Acrobat/Reader after the update completes
- Verify the installed version matches or exceeds the fixed versions listed above
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation3.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-27159 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-27159 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data