CVE-2025-4125: Delta Electronics ISPSoft version 3.20 is vulnerable to an Out-Of-Bounds Write vulnerability that could allow

Q: How do I fix CVE-2025-4125?

ispsoft: upgrade to 3.21. Exact commands for each OS are on this page.

Q: Is CVE-2025-4125 being exploited?

CVE-2025-4125 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-4125 affect?

CVE-2025-4125 affects ispsoft. Severity is high (CVSS 7.8). Delta Electronics ISPSoft version 3.20 is vulnerable to an Out-Of-Bounds Write vulnerability that could allow an attacker to execute arbitrary code when parsing ISP file.

Routine

HIGH 7.8UPGRADE

CVE-2025-4125 is a high-severity flaw (CVSS 7.8) affecting ispsoft. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Delta Electronics ISPSoft version 3.20 is vulnerable to an Out-Of-Bounds Write vulnerability that could allow an attacker to execute arbitrary code when parsing ISP file.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 69%)
CISA exploited list	No
Weakness	CWE-787
Published	2025-04-30
Last modified	2026-06-17

Publisher (CNA): Deltaww · Vendor: deltaww

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-04-30 09:15 UTCPublished CVE record published
2026-06-17 09:32 UTCUpdated Record last modified

deltaww ispsoft UPGRADE

Affected: < 3.21

Fixed in: 3.21

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy ispsoft || rpm -q ispsoft || ispsoft --version

2. UPGRADE to 3.21 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade ispsoft

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ispsoft

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-4125?

ispsoft: upgrade to 3.21. Exact commands for each OS are on this page.

Is CVE-2025-4125 being exploited?

CVE-2025-4125 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-4125 affect?

CVE-2025-4125 affects ispsoft. Severity is high (CVSS 7.8). Delta Electronics ISPSoft version 3.20 is vulnerable to an Out-Of-Bounds Write vulnerability that could allow an attacker to execute arbitrary code when parsing ISP file.

How urgent is CVE-2025-4125?

Priority 35/100. High severity

Related CVEs

CVE-2025-4124 HIGH 7.8 UPGRADE Delta Electronics ISPSoft version 3.20 is vulnerable to an Out-Of-Bounds Write vulnerability that could allow
CVE-2025-22884 HIGH 7.8 UPGRADE Delta Electronics ISPSoft version 3.20 is vulnerable to a Stack-Based buffer overflow vulnerability that could
CVE-2025-22883 HIGH 7.8 UPGRADE Delta Electronics ISPSoft version 3.20 is vulnerable to an Out-Of-Bounds Write vulnerability that could allow
CVE-2025-22882 HIGH 7.8 UPGRADE Delta Electronics ISPSoft version 3.20 is vulnerable to a Stack-Based buffer overflow vulnerability that could

References

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