How the CVE Works:
CVE-2025-27194 is an out-of-bounds write vulnerability in Adobe Media Encoder versions 25.1, 24.6.4, and earlier. The flaw occurs when processing maliciously crafted media files, leading to memory corruption. Attackers exploit this by tricking users into opening a specially designed file, which triggers improper memory writes beyond allocated bounds. Successful exploitation allows arbitrary code execution under the victim’s privileges, enabling system compromise without requiring elevated rights. The issue stems from insufficient boundary checks during file parsing, a common weakness in multimedia software.
DailyCVE Form:
Platform: Adobe Media Encoder
Version: ≤25.1, ≤24.6.4
Vulnerability: Out-of-bounds write
Severity: Critical
Date: 05/05/2025
What Undercode Say:
Exploitation:
- Craft a malicious media file with oversized payloads targeting buffer limits.
- Use social engineering to deliver the file (e.g., phishing email).
3. Trigger corruption to hijack execution flow.
Protection:
1. Apply Adobe’s patch (if available).
2. Restrict file execution via Group Policy (Windows):
Set-ItemProperty -Path "HKLM:\SOFTWARE\Policies\Adobe\MediaEncoder" -Name "BlockUntrustedFiles" -Value 1
3. Monitor process behavior with Sysmon:
<RuleGroup name="Adobe Exploit Block"> <ProcessCreate onmatch="include"> <CommandLine condition="contains">malicious_pattern</CommandLine> </ProcessCreate> </RuleGroup>
Detection (YARA rule for analysts):
rule CVE_2025_27194_Exploit {
strings:
$magic = {41 64 6F 62 65 4D 45} // AdobeME header
$payload = /[\x90]{20,}/ // NOP sled
condition:
$magic at 0 and $payload in (0..1000)
}
Mitigation (Linux/Mac):
chmod -x /Applications/Adobe\ Media\ Encoder/Contents/MacOS/.bin Disable suspect binaries
Forensics:
- Check logs for abnormal Adobe Media Encoder child processes:
Get-WinEvent -LogName Security | Where-Object { $<em>.Id -eq 4688 -and $</em>.Message -like "Adobe Media Encoder" }
2. Dump memory of suspicious processes via Volatility:
volatility -f memdump.mem procdump -p <PID> --dump-dir=./
Workaround:
- Disable Adobe Media Encoder’s file associations temporarily.
- Use VM sandboxing for untrusted files.
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
