CVE-2008-2992

This is a flaw in older versions of Adobe Acrobat and Adobe Reader that can be triggered by a malicious PDF. If a user opens the PDF, the PDF can take advantage of an overflow bug and run malicious code on the computer—like putting a booby-trap inside a document attachment.

This matters if you use Adobe Acrobat or Adobe Reader on computers where users might open PDF files from email, the web, or shared documents. It’s especially relevant because CISA’s KEV catalog indicates it has been used in ransomware activity.

Action is required when the vulnerable Adobe Reader/Acrobat version (8.1.2 and earlier) is present; the risk depends on whether attackers can reach your users through a convincing PDF.

This is RED because it is confirmed in CISA’s KEV set and has been used in ransomware campaigns. Attackers have also published working exploits, meaning this is not just a theoretical risk.

1. Confirm exposure (inventory)

• Identify every device running Adobe Reader and Adobe Acrobat.
• Check the exact installed version; focus on anything “8.1.2 and earlier.”
• Also check any shared servers/workstations that host PDFs users open.

2. Apply the fixed updates

• Adobe remediation is documented in the vendor’s security bulletin for this issue (APSB08-19).
• For systems where you rely on OS vendor packaging (e.g., openSUSE, Solaris distributions), apply the vendor’s errata/updates that address the Adobe Reader/Acrobat vulnerability.
• Install updates following your vendor’s instructions, then re-check the installed version to ensure it is no longer in the vulnerable range.

3. If patching is delayed (temporary containment)

• Prevent users from opening unexpected PDFs, especially from email attachments and untrusted websites.
• Reduce exposure by using a hardened alternative PDF viewing workflow (approved viewer or web-based viewing with controls), or disable PDF JavaScript features where feasible.
• Treat any machine that opened suspicious PDFs as potentially compromised until verified.

4. What to monitor after remediation

• Look for endpoint alerts related to Adobe application crashes and suspicious process launches shortly after PDF opening.
• Review email/security gateway logs for delivery of suspicious PDFs to your users.

CISA timing note (from KEV)

• CISA KEV remediation due date listed: 2022-03-24 (apply updates per vendor instructions).

Severity is High (CVSS 7.8) and the weakness type is a stack-based buffer overflow (CWE-787). The attack mechanism is a crafted PDF that calls the PDF JavaScript util.printf function with a malicious format string argument, leading to memory corruption and remote code execution when the PDF is opened.

Exploitation status: Listed in CISA KEV (confirmed real-world exploitation) with ransomware campaigns, and public exploits are available (4 known). Exploit maturity is therefore practical for attackers.

EPSS is provided as a prediction (98.5%), but real-world confirmation via KEV and weaponized/public exploit availability should drive decision-making. KEV means CISA has identified this vulnerability as actively exploited in the wild and expects remediation per vendor guidance.