Threats / Adobe / CVE-2013-0640
CVE-2013-0640
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Adobe Reader and Acrobat vulnerability
Memory corruption vulnerability in Adobe Reader's acroform.dll enables remote code execution when processing malicious PDF files.
Verdict
Today item — known-exploited.
Out-of-bounds write flaw allows attackers to execute arbitrary code on vulnerable systems through crafted PDF documents. High exploitation activity observed in the wild.
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
8 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-03).
Probability (EPSS)
EPSS 0.86979 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Adobe, Reader and Acrobat. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-787 Out-of-bounds Write — weakness family: Memory safety.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
Craft a malicious PDF document that triggers an out-of-bounds write in acroform.dll processing logic.
Business
End users receive seemingly legitimate PDF files that silently compromise system integrity and confidentiality.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
Distribute the malicious PDF via email, web hosting, or document-sharing platforms to reach target victims.
Business
Attack surface expands across email gateways and web infrastructure, difficult to detect at perimeter.
3
Lateral reach — past segmentation narrative 3
Attacker
Gain code execution within the Reader process context when the victim opens the PDF.
Business
Attacker operates with user privileges, enabling data theft, lateral movement, or persistent installation of malware.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05