Threats / Adobe / CVE-2023-29300
CVE-2023-29300
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Adobe ColdFusion vulnerability
Adobe ColdFusion contains a deserialization of untrusted data vulnerability enabling remote code execution. The flaw is actively exploited in the wild and associated with ransomware campaigns.
Verdict
Today item, not a backlog item.
Critical remote code execution vulnerability in Adobe ColdFusion via unsafe deserialization. High exploitation prevalence and active ransomware deployment indicate immediate patching priority for all affected instances.
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
575 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 2024-01-08), flagged for known ransomware use.
Probability (EPSS)
EPSS 0.99984 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Adobe, ColdFusion. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-502 Deserialization of Untrusted Data — weakness family: Injection.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 serialized object and send it to a ColdFusion endpoint that deserializes untrusted input without validation.
Business
Attacker gains arbitrary code execution on the server with the privileges of the ColdFusion process.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I establish persistence and lateral movement within the network to identify high-value targets and sensitive data.
Business
Attacker positions for data exfiltration or encryption of critical business systems.
3
Lateral reach — past segmentation narrative 3
Attacker
I deploy ransomware payloads across connected systems and encrypt files while exfiltrating sensitive information.
Business
Organization faces operational shutdown, data breach disclosure obligations, and extortion demands.
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