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CVE-2018-4939

91
FAUCET Score

CVE-2018-4939 is a critical Deserialization of Untrusted Data vulnerability affecting Adobe ColdFusion Update 5 and earlier, and ColdFusion 11 Update 13 and earlier. With a CVSS score of 9.8, it allows unauthenticated attackers to achieve arbitrary code execution over the network with low attack complexity. This vulnerability is actively exploited in the wild, as confirmed by its presence in the KEV catalog and high EPSS score. Despite no public Metasploit or ExploitDB modules, it has garnered significant community attention and media coverage, including being targeted by state-sponsored actors.

Impacted Technologies

VendorProductVersion(s)CPE
11.0CPE matchmatch criteria
cpe:2.3:a:adobe:coldfusion:11.0:-:*:*:*:*:*:*
11.0CPE matchmatch criteria
cpe:2.3:a:adobe:coldfusion:11.0:update1:*:*:*:*:*:*
11.0CPE matchmatch criteria
cpe:2.3:a:adobe:coldfusion:11.0:update10:*:*:*:*:*:*
11.0CPE matchmatch criteria
cpe:2.3:a:adobe:coldfusion:11.0:update11:*:*:*:*:*:*
11.0CPE matchmatch criteria
cpe:2.3:a:adobe:coldfusion:11.0:update12:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
62.91%
Probability of exploitation in next 30 days
EPSS Percentile
99.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
Added to KEV · Nov 3, 2021
This CVE's current EPSS score of 0.6291 is in the 97th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

adobevendor investigatingvia nvd_reference
View patch

References

cisa.gov / known-exploited-vulnerabilities-catalog
Third Party AdvisoryUS Government Resource
helpx.adobe.com / security/products/coldfusion/apsb18-14.html
Vendor Advisory
securityfocus.com / bid/103718
Third Party AdvisoryVDB Entry