CVE-2018-25223

Crashmail 1.6 Stack-based Buffer Overflow Remote Code Execution

9.3 Critical

Crashmail 1.6 contains a stack-based buffer overflow vulnerability that allows remote attackers to execute arbitrary code by sending malicious input to the application. Attackers can craft payloads with ROP chains to achieve code execution in the application context, with failed attempts potentially causing denial of service.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

0.94%Up 0.8 points since Mar 28, 2026

What each source reports

CVE List Score used 9.3

Crashmail 1.6 Stack-based Buffer Overflow Remote Code Execution

Record: CVE-2018-25223
CVSS 4.0: 9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-787
Updated: 2026-11-02

EUVDEUVD-2018-21704 9.3

Record: EUVD-2018-21704
CVSS 4.0: 9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-p8mc-x23q-5vqf 9.3

Crashmail 1.6 contains a stack-based buffer overflow vulnerability that allows remote attackers...

Record: GHSA-p8mc-x23q-5vqf
CVSS 4.0: 9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-787
Updated: 2026-11-02

NVD 9.3

Record: CVE-2018-25223
CVSS 4.0: 9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-787
Updated: 2026-11-02

OSVDEBIAN-CVE-2018-25223 9.8

Record: DEBIAN-CVE-2018-25223
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2018-25223 9.3

Record: UBUNTU-CVE-2018-25223
CVSS 4.0: 9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`crashmail` Ubuntu:16.04:LTS	All versions, plus listed versions 1.5-1	None known
`crashmail` Ubuntu:18.04:LTS	All versions, plus listed versions 1.5-11.6-1	None known
`crashmail` Ubuntu:20.04:LTS	All versions, plus listed versions 1.7-1	None known
`crashmail` Ubuntu:22.04:LTS	All versions, plus listed versions 1.7-2build1	None known
`crashmail` Ubuntu:24.04:LTS	All versions, plus listed versions 1.7-4	None known
`crashmail` Ubuntu:25.10	All versions, plus listed versions 1.7-41.7-5	None known
`crashmail` Ubuntu:26.10	All versions, plus listed versions 1.7-5build1	None known
`crashmail` Ubuntu:26.04:LTS	All versions, plus listed versions 1.7-51.7-5build1	None known

History

History
Recorded	Changed	Sources
Nov 10, 2026	facts
Nov 3, 2026	affected
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2018-25223 is a critical vulnerability (CVSS 9.3) in Crashmail, published March 28, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.94%, the 61st percentile. No source names a fixed version.