Threats / Adobe / CVE-2009-0927
CVE-2009-0927
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Adobe Reader and Acrobat vulnerability
Stack-based buffer overflow in Adobe Reader and Acrobat enables remote code execution when processing malicious documents.
Verdict
Today item — known-exploited.
A stack buffer overflow in Adobe Reader and Acrobat allows attackers to execute arbitrary code remotely by crafting malicious PDF or document files. The vulnerability has been actively exploited in the wild.
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
7 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 2022-03-25).
Probability (EPSS)
EPSS 0.96598 — 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-20 Improper Input Validation.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
I craft a malicious PDF document containing data that overflows a stack buffer during parsing.
Business
Users receive seemingly legitimate documents via email or web download, creating initial infection vector.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I trigger the overflow by delivering the document to a target running vulnerable Adobe Reader or Acrobat.
Business
The application processes the file without adequate input validation, allowing memory corruption.
3
Lateral reach — past segmentation narrative 3
Attacker
I overwrite the stack to redirect execution flow to my injected shellcode.
Business
Arbitrary code executes with the privileges of the user running Adobe Reader, compromising the endpoint.
4
Data at risk — exfiltration narrative 4
Attacker
I establish persistence or move laterally within the network from the compromised system.
Business
Attackers gain foothold for data theft, malware deployment, or further network compromise.
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