CVE-2018-4993

HIGHNVD 7.57.5—Weaponized

7.5

Adobe Acrobat and Reader versions 2018.011.20038 and earlier, 2017.011.30079 and earlier, and 2015.006.30417 and earlier have an NTLM SSO hash theft vulnerability. Successful exploitation could lead to information disclosure.

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 98.6%
KEV: Not listed

Published

July 9, 2018

Last Modified

November 21, 2024

References (6)

psirt@adobehttp://www.securityfocus.com/bid/104177
psirt@adobehttp://www.securitytracker.com/id/1040920
psirt@adobehttps://helpx.adobe.com/security/products/acrobat/apsb18-09.html
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/104177
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1040920
af854a3a-2127-422b-91ae-364da2661108https://helpx.adobe.com/security/products/acrobat/apsb18-09.html

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-200Exposure of Sensitive Information to an Unauthorized Actor

Data Freshness Timeline

(refreshed 8× in last 7d / 16× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-05 22:45 UTCepss_batch
2026-06-05 22:45 UTCepss_batch
2026-06-05 06:08 UTCepss_batch
2026-06-05 06:08 UTCepss_batch
2026-06-04 13:10 UTCepss_batch
2026-06-04 13:10 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-28 05:29 UTCEG score recompute
2026-05-28 05:29 UTCGHSA enrichment
2026-05-27 13:38 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-25 04:37 UTCOSV refresh

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Metasploit module). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Metasploitauxiliary/fileformat/badpdf✓ verified
First seen Jan 1, 2018
BADPDF Malicious PDF Creator
Open source ↗

Frequently asked(5)

What is CVE-2018-4993?

CVE-2018-4993 is a high vulnerability published on July 9, 2018. Adobe Acrobat and Reader versions 2018.011.20038 and earlier, 2017.011.30079 and earlier, and 2015.006.30417 and earlier have an NTLM SSO hash theft vulnerability. Successful exploitation could lead to information disclosure.

When was CVE-2018-4993 disclosed?

CVE-2018-4993 was first published in the National Vulnerability Database on July 9, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2018-4993 actively exploited?

CVE-2018-4993 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 98.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2018-4993?

CVE-2018-4993 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2018-4993?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-4993, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2018-4993

📅 Published

🔄 Last Modified

🔗 References (6)

Weakness Classification(1)

Data Freshness Timeline

Publicly available exploits

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2018-4993?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (6)

Frequently asked(5)

Related CVEs(same CWE)