SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2021-38406

Delta Electronics DOPSoft 2 Improper Input Validation Vulnerability

KEVHIGH 7.8EPSS 76.4%

Does this matter?

Known to be exploited in the wild (CISA KEV, CISA remediation deadline 15 September 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.

Description

Delta Electronic DOPSoft 2 (Version 2.00.07 and prior) lacks proper validation of user-supplied data when parsing specific project files. This could result in multiple out-of-bounds write instances. An attacker could leverage this vulnerability to execute code in the context of the current process.

CVSS 3.1
7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
76.43% probability · 100th percentile
Public exploits
None in Exploit-DB
CISA KEV
Listed 25 August 2022 · due 15 September 2022
Weakness
CWE-787
Affected
deltaww/dopsoft
Source
ics-cert@hq.dhs.gov
EPSS trend
0%40%80%30 October 2026: 76.43%30 October 202630 October 2026

EPSS 76.4% since 30 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

CISA notes

The impacted product is end-of-life and should be disconnected if still in use. https://www.cisa.gov/uscert/ics/advisories/icsa-21-252-02; https://nvd.nist.gov/vuln/detail/CVE-2021-38406

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.