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CVE-2018-4993

81
FAUCET Score

CVE-2018-4993 is a critical NTLM SSO hash theft vulnerability affecting Adobe Acrobat and Reader across multiple versions, as well as products from Apple and Microsoft. This flaw allows for information disclosure, rated with a CVSS score of 7.5 (High) due to its network-based attack vector and low attack complexity, requiring no user interaction. While not listed on CISA's KEV, exploit intelligence indicates the availability of a Metasploit module (BADPDF Malicious PDF Creator), and the vulnerability has garnered significant community discussion and media coverage, suggesting a high potential for exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
>= 15.006.30060, <= 15.006.30417CPE matchmatch criteria
cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:classic:*:*:*
>= 15.008.20082, <= 18.011.20038CPE matchmatch criteria
cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:*
>= 17.011.30059, <= 17.011.30079CPE matchmatch criteria
cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:classic:*:*:*
>= 15.006.30060, <= 15.006.30417CPE matchmatch criteria
cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:classic:*:*:*
>= 15.008.20082, <= 18.011.20038CPE matchmatch criteria
cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
86.90%
Probability of exploitation in next 30 days
EPSS Percentile
99.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.8690 is in the 100th percentile among its peer group of 51,466 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

adobepatch availablevia nvd_reference
View patch

References

helpx.adobe.com / security/products/acrobat/apsb18-09.html
PatchVendor Advisory
securityfocus.com / bid/104177
Third Party AdvisoryVDB Entry
securitytracker.com / id/1040920
Third Party AdvisoryVDB Entry