// For flags

CVE-2018-14680

libmspack: off-by-one error in the CHM chunk number validity checks

Severity Score

6.5
*CVSS v3

Exploit Likelihood

1.6%
*EPSS

Affected Versions

16
*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

An issue was discovered in mspack/chmd.c in libmspack before 0.7alpha. It does not reject blank CHM filenames.

Se ha descubierto un problema en mspack/chmd.c en libmspack en versiones anteriores a la 0.7alpha. No rechaza los nombres de archivos CHM en blanco.

Several vulnerabilities were discovered in libsmpack, a library used to handle Microsoft compression formats. A remote attacker could craft malicious CAB, CHM or KWAJ files and use these flaws to cause a denial of service via application crash, or potentially execute arbitrary code.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2018-07-28 CVE Reserved
  • 2018-07-28 CVE Published
  • 2024-08-05 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-20: Improper Input Validation
  • CWE-193: Off-by-one Error
CAPEC
Affected Vendors, Products, and Versions (16)