CVE-2023-43820: A stack based buffer overflow exists in Delta Electronics Delta Industrial Automation DOPSoft when parsing the

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HIGH 8.8UPGRADE

CVE-2023-43820 is a high-severity flaw (CVSS 8.8) affecting dopsoft. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A stack based buffer overflow exists in Delta Electronics Delta Industrial Automation DOPSoft when parsing the wLogTitlesPrevValueLen field of a DPS file. A remote, unauthenticated attacker can exploit this vulnerability by enticing a user to open a specially crafted DPS file to achieve remote code execution.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.0% (top 38%)
CISA exploited list	No
Weakness	CWE-119, CWE-120
Published	2024-01-18
Last modified	2026-06-17

Publisher (CNA): Exodus Intelligence · Vendor: deltaww

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

Am I affected?

Timeline

2024-01-18 22:15 UTCPublished CVE record published
2026-06-17 06:26 UTCUpdated Record last modified

deltaww dopsoft UPGRADE

Affected: >= 2.00.00.00 and <= 2.00.07.04

Fixed in: newer than 2.00.07.04

Safe to downgrade to: a release before 2.00.00.00

1. Check installed version

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

2. UPGRADE to newer than 2.00.07.04 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade dopsoft

Note

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

3. If no update is available yet, DOWNGRADE to a release before 2.00.00.00 (Debian / Ubuntu)

apt-cache madison dopsoft sudo apt install dopsoft=<VERSION_BEFORE_2.00.00.00> sudo apt-mark hold dopsoft

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list dopsoft sudo dnf downgrade dopsoft-<VERSION_BEFORE_2.00.00.00> sudo dnf versionlock add dopsoft

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2023-43820?

dopsoft: upgrade to newer than 2.00.07.04. Exact commands for each OS are on this page.

Is CVE-2023-43820 being exploited?

CVE-2023-43820 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-2023-43820 affect?

CVE-2023-43820 affects dopsoft. Severity is high (CVSS 8.8). A stack based buffer overflow exists in Delta Electronics Delta Industrial Automation DOPSoft when parsing the wLogTitlesPrevValueLen field of a DPS file. A remote, unauthenticated attacker can exploit this vulnerability by enticing a user

How urgent is CVE-2023-43820?

Priority 46/100. High severity

Related CVEs

CVE-2024-1595 HIGH 7.8 UPGRADE UPGRADE Delta Electronics CNCSoft-B DOPSoft prior to v4.0.0.82 insecurely loads libraries, which may allow an attack
CVE-2023-5944 HIGH 7.8 MITIGATE Delta Electronics DOPSoft is vulnerable to a stack-based buffer overflow, which may allow for arbitrary code
CVE-2023-4685 HIGH 7.8 UPGRADE UPGRADE Delta Electronics' CNCSoft-B version 1.0.0.4 and DOPSoft versions 4.0.0.82 and prior are vulnerable to stack-b
CVE-2023-43824 HIGH 8.8 UPGRADE A stack based buffer overflow exists in Delta Electronics Delta Industrial Automation DOPSoft when parsing the
CVE-2023-43823 HIGH 8.8 UPGRADE A stack based buffer overflow exists in Delta Electronics Delta Industrial Automation DOPSoft when parsing the

References

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