Vulnerability Details : CVE-2018-3940

An exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit Software's PDF Reader, version 9.1.0.5096. A specially crafted PDF document can trigger a previously freed object in memory to be reused. An attacker needs to trick the user to open the malicious file to trigger.
Published 2018-10-08 16:29:03
Updated 2023-02-02 22:15:08
Source Talos
View at NVD,   CVE.org
Vulnerability category: Memory Corruption

Exploit prediction scoring system (EPSS) score for CVE-2018-3940

EPSS FAQ
0.24%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 62 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2018-3940

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
6.8
 MEDIUM AV:N/AC:M/Au:N/C:P/I:P/A:P
8.6
6.4
 NIST
8.0
 HIGH CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
2.1
5.9
 Talos
8.8
 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
2.8
5.9
 NIST

CWE ids for CVE-2018-3940

  • The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2018-3940

Products affected by CVE-2018-3940

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