Published:2026/08/26  Last Updated:2026/08/26

JVN#18496672
Multiple vulnerabilities in CorvusSKK

Overview

CorvusSKK provided by SASAKI Nobuyuki contains multiple vulnerabilities.

Products Affected

  • CorvusSKK versions prior to 3.3.4

Description

CorvusSKK provided by SASAKI Nobuyuki contains multiple vulnerabilities listed below:

  • Code Injection (CWE-94)
    • CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N Base Score 8.4
    • CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Base Score 7.8
    • CVE-2026-76148
  • Integer Overflow or Wraparound (CWE-190)
    • CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N Base Score 4.6
    • CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L Base Score 4.4
    • CVE-2026-76149

Impact

  • Arbitrary code may be executed on the affected product (CVE-2026-76148).
  • Malicious data may be written to a legitimate dictionary file (CVE-2026-76149).

Solution

Update the Software
Update the software to the latest version according to the information provided by the developer.

Vendor Status

References

JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Credit

Ryo Shimada of Powder Keg Technologies, Inc. reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.

Other Information

JPCERT Alert
JPCERT Reports
CERT Advisory
CPNI Advisory
TRnotes
CVE CVE-2026-76148
CVE-2026-76149
JVN iPedia JVNDB-2026-000122