CVE-2022-43663: An integer conversion vulnerability exists in the SORBAx64.dll RecvPacket functionality of WellinTech KingHist

This week

HIGH 8.1REMOTEDOWNGRADE

CVE-2022-43663 is a high-severity flaw (CVSS 8.1) affecting kinghistorian. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An integer conversion vulnerability exists in the SORBAx64.dll RecvPacket functionality of WellinTech KingHistorian 35.01.00.05. A specially crafted network packet can lead to a buffer overflow. An attacker can send a malicious packet to trigger this vulnerability.

Why this priority

High severity
EPSS top 3%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	14.0% (top 3%)
CISA exploited list	No
Weakness	CWE-195, CWE-681
Published	2023-03-20
Last modified	2026-06-17

Publisher (CNA): Talos · Vendor: wellintech

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

Am I affected?

Timeline

2023-03-20 21:15 UTCPublished CVE record published
2026-06-17 05:07 UTCUpdated Record last modified

wellintech kinghistorian DOWNGRADE

Affected: 35.01.00.05

Fixed in: no fixed release known

Safe to downgrade to: a release before 35.01.00.05

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 35.01.00.05 (Debian / Ubuntu)

apt-cache madison kinghistorian sudo apt install kinghistorian=<VERSION_BEFORE_35.01.00.05> sudo apt-mark hold kinghistorian

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list kinghistorian sudo dnf downgrade kinghistorian-<VERSION_BEFORE_35.01.00.05> sudo dnf versionlock add kinghistorian

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-2022-43663?

kinghistorian: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-43663 being exploited?

CVE-2022-43663 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-2022-43663 affect?

CVE-2022-43663 affects kinghistorian. Severity is high (CVSS 8.1). An integer conversion vulnerability exists in the SORBAx64.dll RecvPacket functionality of WellinTech KingHistorian 35.01.00.05. A specially crafted network packet can lead to a buffer overflow. An attacker can send a malicious packet to tr

How urgent is CVE-2022-43663?

Priority 62/100. High severity; EPSS top 3%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2022-45124 HIGH 7.5 DOWNGRADE An information disclosure vulnerability exists in the User authentication functionality of WellinTech KingHist

References

← Back to latest CVEs