CVE-2021-43361: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in MedData

Q: How do I fix CVE-2021-43361?

hbys: upgrade to 1.1. Exact commands for each OS are on this page.

Q: Is CVE-2021-43361 being exploited?

CVE-2021-43361 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-2021-43361 affect?

CVE-2021-43361 affects hbys. Severity is critical (CVSS 9.9). Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in MedData HBYS allows SQL Injection.This issue affects HBYS: from unspecified before 1.1.

Q: How urgent is CVE-2021-43361?

Priority 53/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.9REMOTEUPGRADE

CVE-2021-43361 is a critical-severity flaw (CVSS 9.9) affecting hbys. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in MedData HBYS allows SQL Injection.This issue affects HBYS: from unspecified before 1.1.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.9 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 46%)
CISA exploited list	No
Weakness	CWE-89
Published	2021-11-16
Last modified	2026-06-17

Publisher (CNA): Computer Emergency Response Team of the Republic of Turkey · Vendor: meddata

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

Am I affected?

Timeline

2021-11-16 16:15 UTCPublished CVE record published
2026-06-17 04:10 UTCUpdated Record last modified

meddata hbys UPGRADE

Affected: < 1.1

Fixed in: 1.1

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 1.1 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade hbys

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-2021-43361?

hbys: upgrade to 1.1. Exact commands for each OS are on this page.

Is CVE-2021-43361 being exploited?

CVE-2021-43361 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-2021-43361 affect?

CVE-2021-43361 affects hbys. Severity is critical (CVSS 9.9). Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in MedData HBYS allows SQL Injection.This issue affects HBYS: from unspecified before 1.1.

How urgent is CVE-2021-43361?

Priority 53/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2021-43362 CRITICAL 9.9 UPGRADE Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in MedData

References

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