Adobe Acrobat Vulnerabilities Enable Remote Code Execution

A recent disclosure by Cisco Talos’ Vulnerability Discovery & Research team highlighted several vulnerability issues in Adobe Acrobat.

All of these vulnerabilities have been addressed by their respective vendors, aligning with Cisco’s third-party vulnerability disclosure policy.

For detection of these vulnerabilities, users can utilize the latest Snort rule sets available from Snort.org and refer to Talos Intelligence’s website for the latest Vulnerability Advisories.

CVE Details

The vulnerabilities affecting Adobe Acrobat involve a combination of out-of-bounds reads and a memory corruption issue, all of which are linked to the font functionality within the software.

• TALOS-2025-2134 (CVE-2025-27163) and TALOS-2025-2136 (CVE-2025-27164): These are out-of-bounds read vulnerabilities that can result in the disclosure of sensitive information. The primary concern with these vulnerabilities is the potential leakage of data, which can be exploited by an attacker to gain unauthorized insights into the system or user data.
• TALOS-2025-2135 (CVE-2025-27158): This is a memory corruption vulnerability caused by an uninitialized pointer in Adobe Acrobat’s font functionality. This specific issue is more critical as it could potentially lead to arbitrary code execution if exploited. By crafting a malicious font file embedded in a PDF, an attacker could trigger these vulnerabilities. However, successful exploitation requires the user to be tricked into opening such a malicious file.

Affected Products

Product	Vulnerability (CVE)
Adobe Acrobat	CVE-2025-27163
Adobe Acrobat	CVE-2025-27164
Adobe Acrobat	CVE-2025-27158

Impact and Mitigation

These vulnerabilities highlight the importance of patch management in preventing potential attacks. Users are advised to ensure their Adobe Acrobat software is updated with the latest security patches.

Moreover, caution should be exercised when opening PDF files from untrusted sources, as this can help prevent exploitation of such vulnerabilities.

For organizations and individuals seeking to protect against these vulnerabilities, updating software promptly and maintaining awareness of file sources are key steps in mitigating risk.

Additionally, implementing robust security measures, such as endpoint detection systems, can add an extra layer of protection against exploitation attempts.

The proactive patching of these vulnerabilities by Adobe illustrates the collaborative effort between vendors and security researchers to safeguard user security.

Users must remain vigilant and keep their systems updated to prevent the exploitation of such vulnerabilities.

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