CVE-2017-8862 The webupgrade function on the Cohu 3960HD does not verify the firmware upgrade files or process, allowing an attacker to upload a specially crafted postinstall.sh file that will be executed with "roo...

CriticalCVSS 9.8 EPSS 1.5%

Published: 2017-11-22 10:00
Updated: 2026-06-17 04:27
Exploit status: No public exploit known

Description

The webupgrade function on the Cohu 3960HD does not verify the firmware upgrade files or process, allowing an attacker to upload a specially crafted postinstall.sh file that will be executed with "root" privileges.

Affected products

Product	Affected versions	Fixed in
cohuhd 3960hd firmware	All versions	No fix listed

References

bneg.io third-party-advisory

CVSS v3.0

9.8 Critical

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

All scores (2)

v3.0 9.8 · nvd@nist.gov
v2.0 10.0 · nvd@nist.gov

Weakness & likelihood

EPSS (exploitation probability, 30 days): 1.48% (percentile 74.4)
CWE: CWE-434

Public exploit references

Metadata only. CVERadar never hosts or runs exploit code.

No public exploit references known.