CVE-2023-38203

Adobe ColdFusion: Deserialization of Untrusted Data

As of , CVE-2023-38203 in Adobe ColdFusion is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch this week.

Exploited
Yes: CISA listed it on 8 January 2024
US federal deadline
29 January 202421 days after CISA listed it. US federal civilian agencies must fix it by then.
Used in ransomware campaigns
Known
EPSS score
0.97Higher than 99% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
EPSS when listed
0.00 on 8 January 2024EPSS on the day CISA listed it.
Public exploit
None foundNeither Metasploit nor Exploit-DB lists one.
Fix
Vendor advice: helpx.adobe.comLinks below, from CISA's entry.

What CISA says to do

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

CISA's required action

What the flaw is

Adobe ColdFusion contains a deserialization of untrusted data vulnerability that allows for code execution.

CISA's description

Adobe ColdFusion versions 2018u17 (and earlier), 2021u7 (and earlier) and 2023u1 (and earlier) are affected by a Deserialization of Untrusted Data vulnerability that could result in Arbitrary code execution. Exploitation of this issue does not require user interaction.

The CVE record's description, from adobe

CVE published
20 July 2023
Assigned by
adobe
CVSS
9.8 Critical (CVSS 3.1, from the CNA)
CWE-502
Deserialization of Untrusted Data
CISA SSVC, exploitation
active
CISA SSVC, automatable
yes
CISA SSVC, technical impact
total

Timeline

  1. The CVE record was published.
  2. CISA added it to its list of exploited vulnerabilities.
  3. The US federal deadline to fix it.

ColdFusion: other exploited entries

VulnerabilityProductOur groupListedDeadlineEPSS
CVE-2026-48282Path TraversalAdobe ColdFusionPatch nowForensic triage required by CISA0.42
CVE-2010-2861Directory TraversalAdobe ColdFusionPatch this weekRansomware use; Metasploit module; EPSS 0.99; verified Exploit-DB entry0.99
CVE-2013-0632Authentication BypassAdobe ColdFusionPatch this weekMetasploit module; EPSS 0.94; verified Exploit-DB entry0.94
CVE-2024-20767Improper Access ControlAdobe ColdFusionPatch this weekMetasploit module; EPSS 0.990.99
CVE-2023-26360Deserialization of Untrusted DataAdobe ColdFusionPatch this weekMetasploit module; EPSS 0.970.97
CVE-2018-15961Unrestricted File UploadAdobe ColdFusionPatch this weekMetasploit module; EPSS 0.990.99
CVE-2013-0625Authentication BypassAdobe ColdFusionPatch this weekEPSS 0.94; verified Exploit-DB entry0.94
CVE-2013-0629Directory TraversalAdobe ColdFusionPatch this weekEPSS 0.66; verified Exploit-DB entry0.66
CVE-2017-3066DeserializationAdobe ColdFusionPatch this weekEPSS 0.910.91
CVE-2023-29300Deserialization of Untrusted DataAdobe ColdFusionPatch this weekRansomware use; EPSS 0.990.99

All 16 entries for ColdFusion

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