Which versions of Axessh are affected by EUVD-2019-19955?

Organizations using Axessh 4.2 face notable risk from CVE-2019-25607, a out-of-bounds write vulnerability rated CVSS 8.4.

Is there a public PoC exploit available for EUVD-2019-19955?

Yes, a public proof-of-concept exploit is available for EUVD-2019-19955. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate EUVD-2019-19955?

Within 7 days: Identify all affected systems and apply vendor patches promptly. If patching is delayed, consider network segmentation to limit exposure.

Axessh EUVD-2019-19955

Q: What is the CVSS score of EUVD-2019-19955?

EUVD-2019-19955 has a CVSS 4.0 base score of 8.6 (High). CVSS vector: CVSS:4.0/AV:L/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. EPSS exploitation probability: 0.0%.

| CVE-2019-25607 HIGH

Out-of-bounds Write (CWE-787)

2026-03-22 VulnCheck

GHSA-892q-pfj4-43mq

Memory Corruption Buffer Overflow RCE Axessh

8.6

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

8.6 HIGH

CVSS:4.0/AV:L/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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:4.0/AV:L/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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Lifecycle Timeline

Re-analysis Queued

Apr 16, 2026 - 16:22 vuln.today

cvss_changed

CVSS changed

Apr 16, 2026 - 16:22 NVD

8.4 (HIGH) 8.6 (HIGH)

PoC Detected

Mar 23, 2026 - 14:31 vuln.today

Public exploit code

EUVD ID Assigned

Mar 22, 2026 - 13:45 euvd

EUVD-2019-19955

Analysis Generated

Mar 22, 2026 - 13:45 vuln.today

CVE Published

Mar 22, 2026 - 13:38 nvd

HIGH 8.4

DescriptionCVE.org

Axessh 4.2 contains a stack-based buffer overflow vulnerability in the log file name field that allows local attackers to execute arbitrary code by supplying an excessively long filename. Attackers can overflow the buffer at offset 214 bytes to overwrite the instruction pointer and execute shellcode with system privileges.

AnalysisAI

Axessh 4.2 contains a stack-based buffer overflow vulnerability in the log file name field that allows local attackers to execute arbitrary code by supplying an excessively long filename.

Technical ContextAI

An out-of-bounds memory access occurs when code reads from or writes to memory locations outside the intended buffer boundaries. This vulnerability is classified as Out-of-bounds Write (CWE-787).