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Vulnerabilities

Threat intelligence · CVE-2018-4993

The case of the unpatched variant of the PDF NTLM leaking vulnerability CVE-2018-4993 In April or May 2018, Check Point released a blog post detailing a NTLM leaking v…

Published Nov 13, 2018 · the affected product

Last checked Oct 31, 2026. A connected source was read within the last 7 days.

Check this week

CVE-2018-4993 is not in CISA KEV. FIRST estimates a 86.72% chance of exploitation in the next 30 days. Check whether you run the affected product.

Gaps on this record

  • No plain product name is stored. The page cannot tell you which product to check.
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Unknown—
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
86.72%
Remediation
Not established
Affected products
See sources for product scope

The case of the unpatched variant of the PDF NTLM leaking vulnerability CVE-2018-4993 In April or May 2018, Check Point released a blog post detailing a NTLM leaking vulnerability on Adobe Reader & Foxit Reader. Later, Adobe released a security advisory claiming the vulnerability was fixed since Acrobat Reader DC 2018.011.20040. However, we found that only one variant of this vulnerability were successfully patched b

No affected version ranges are stored yet. Use the vendor advisory before you decide this record does not apply.

How to fix CVE-2018-4993

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2018-4993 is not in CISA KEV. FIRST estimates a 86.72% chance of exploitation in the next 30 days. Check whether you run the affected product.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 86.72%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Check Point Quantum security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Nov 13, 2018 · AlienVault OTX

    Detected

    The case of the unpatched variant of the PDF NTLM leaking vulnerability CVE-2018-4993 In April or May 2018, Check Point released a blog post detailing a NTLM leaking vulnerability on Adobe Reader & Foxit Reader. Later, Adobe released a security advisory claiming the vulnerability was fixed since Acrobat Reader DC 2018.011.20040. However, we found that only one variant of this vulnerability were su

Sources

References

Freshness

Last verified in this catalog Oct 31, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSOct 31, 2026
  • AlienVault OTXOct 31, 2026