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Weekly Signal
Live intelligence Updated 20 Aug 2026 · 23:28 UTC

Adobe · ColdFusion

CVE-2018-4939

Adobe ColdFusion Deserialization of Untrusted Data Vulnerability

Recommended action

Validate affected assets and exposure now, then remediate on an accelerated schedule. Adobe Security advisory APSB18-14

View response plan
CVSS9.8
EPSS62.9%
KEVYes
ExploitationConfirmed exploitation
RemediationNot yet verified ↓

Assessment

Why it matters

CISA lists this vulnerability as known to be exploited; exploitation is confirmed; EPSS is 62.9%; technical severity is CVSS 9.8.

Adobe ColdFusion Update 5 and earlier versions, ColdFusion 11 Update 13 and earlier versions have an exploitable Deserialization of Untrusted Data vulnerability. Successful exploitation could lead to arbitrary code execution.

Who should care

  • Teams operating ColdFusion
  • Vulnerability and exposure management teams
  • Security operations teams monitoring exploitation activity

Response plan

What I would do

  1. Confirm whether ColdFusion is present in the environment.
  2. Identify affected versions and establish whether vulnerable services are exposed or reachable.
  3. Adobe Security advisory APSB18-14
  4. Review relevant security telemetry for evidence of attempted or successful exploitation.
  5. Document the remediation decision and track it to verified completion.

Treatment intelligence

Remediation intelligence

Not yet verified

Vendor sources are listed before government and third-party guidance. Confirm product applicability and change prerequisites before deployment.

Verification noteAutomated link verification has not completed for this guidance yet.

Technical details

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-502
Affected versions
Adobe ColdFusion (Version 11.0 | Version 11.0 | Version 11.0 | Version 11.0)
Fixed versions
No explicit fixed version is currently recorded.
Published
19 May 2018
Attack vector
Network
Privileges required
None
User interaction
None

Signal timeline

  1. CVE published
  2. Added to CISA KEV
  3. Latest EPSS score: 62.9%
  4. Signal calculated at 81

External references

Live public intelligence This assessment combines public-source evidence. Validate the affected product, version and exposure against your own environment before making a risk decision.