Cyber Resilience

CVE-2026-34622

Adobe Acrobat 24.0.0 – 24.001.30365

Published
14 April 2026
Modified
16 April 2026
Patch / advisory
View advisory
CVSS Score v3.1 8.6
Click a component to see what it means
Raw vectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
EPSS Score 0.0042 35th percentile
Risk Priority 61 floored blend · peak EPSS

Summary

CVE-2026-34622 is a high-severity Prototype Pollution (CWE-1321) vulnerability in Adobe Acrobat. Its CVSS base score is 8.6 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 35th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

CVE-2026-34622 is an Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') vulnerability, mapped to CWE-1321, affecting Adobe Acrobat Reader versions 26.001.21411, 24.001.30360, 24.001.30362, and earlier. Published on 2026-04-14, this flaw enables arbitrary code execution in the context of the current user.

Exploitation requires user interaction, as a victim must open a malicious file. An attacker can craft such a file and deliver it to the target, who, upon opening it in the vulnerable Acrobat Reader, triggers the prototype pollution leading to arbitrary code execution with the current user's privileges. The CVSS v3.1 base score of 8.6 (AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H) reflects low attack complexity, no required privileges, and high impacts across confidentiality, integrity, and availability in a changed scope.

Adobe's security bulletin APSB26-44, available at https://helpx.adobe.com/security/products/acrobat/apsb26-44.html, addresses this issue with details on available patches and recommended mitigations.

EU & UK References

Vulnerability Data

Acrobat Reader versions 26.001.21411, 24.001.30360, 24.001.30362 and earlier are affected by an Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue…

more

requires user interaction in that a victim must open a malicious file.

CWE(s)
CWE-1321

Related Threats

MITRE ATT&CK Enterprise Techniques

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1059 Command and Scripting Interpreter Execution
Adversaries may abuse command and script interpreters to execute commands, scripts, or binaries.
attack.mitre.org →
T1203 Exploitation for Client Execution Execution
Adversaries may exploit software vulnerabilities in client applications to execute code.
attack.mitre.org →
T1565 Data Manipulation Impact
Adversaries may insert, delete, or manipulate data in order to influence external outcomes or hide activity, thus threatening the integrity of the data.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2026-34621Same product: Adobe Acrobat
CVE-2026-34626Same product: Adobe Acrobat
CVE-2023-21579Same product: Adobe Acrobat
CVE-2024-20730Same product: Adobe Acrobat
CVE-2021-28560Same product: Adobe Acrobat
CVE-2024-20733Same product: Adobe Acrobat
CVE-2023-44361Same product: Adobe Acrobat
CVE-2024-34100Same product: Adobe Acrobat
CVE-2024-34095Same product: Adobe Acrobat
CVE-2024-30305Same product: Adobe Acrobat

Affected Assets

adobe
acrobat
24.0.0 — 24.001.30365
adobe
acrobat dc
15.008.20082 — 26.001.21431
adobe
acrobat reader dc
15.008.20082 — 26.001.21431

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V15.3.6

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly require input validation and safe property assignment to prevent prototype pollution.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing in development catches prototype-pollution flaws before release.

A.8.25 Secure development life cycle partial match
prevents

Secure development lifecycle mandates input validation and object-handling controls that directly prevent prototype pollution.

A.8.26 Application security requirements partial match
prevents

Application security requirements explicitly call for safeguards against unsafe object attribute manipulation.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles reduce the likelihood of prototype pollution through safe design patterns.

A.8.28 Secure coding partial match
prevents

Secure coding standards directly prohibit unsafe prototype attribute assignment and require defensive checks.

A.8.32 Change management partial match
prevents

Change-management processes ensure security fixes for prototype-pollution issues are tracked and deployed.

References