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CVE-2021-35975: Absolute path traversal vulnerability in the Systematica SMTP Adapter component (up to v2.0.1.101) in Systemat

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MEDIUM 5.3REMOTEUPGRADEUPGRADEUPGRADE

CVE-2021-35975 is a medium-severity flaw (CVSS 5.3) affecting financial calculator, fix adapter, http adapter. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Absolute path traversal vulnerability in the Systematica SMTP Adapter component (up to v2.0.1.101) in Systematica Radius (up to v.3.9.256.777) allows remote attackers to read arbitrary files via a full pathname in GET parameter "file" in URL. Also: affected components in same product - HTTP Adapter (up to v.1.8.0.15), MSSQL MessageBus Proxy (up to v.1.1.06), Financial Calculator (up to v.1.3.05), FIX Adapter (up to v.2.4.0.25)

Why this priority

  • Public exploit reference
  • Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score5.3 (Medium)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance1.1% (top 35%)
CISA exploited listNo
WeaknessCWE-22
Published2023-11-30
Last modified2026-06-17
Publisher (CNA): MITRE · Vendor: systematica

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

Am I affected?

Timeline

systematica financial calculator UPGRADE
Affected: <= 1.3.05
Fixed in: newer than 1.3.05
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy financial-calculator || rpm -q financial-calculator || financial-calculator --version
2. UPGRADE to newer than 1.3.05 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade financial-calculator
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade financial-calculator
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
systematica fix adapter UPGRADE
Affected: <= 2.4.0.25
Fixed in: newer than 2.4.0.25
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy fix-adapter || rpm -q fix-adapter || fix-adapter --version
2. UPGRADE to newer than 2.4.0.25 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade fix-adapter
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade fix-adapter
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
systematica http adapter UPGRADE
Affected: <= 1.8.0.15
Fixed in: newer than 1.8.0.15
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy http-adapter || rpm -q http-adapter || http-adapter --version
2. UPGRADE to newer than 1.8.0.15 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade http-adapter
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade http-adapter
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
systematica mssql messagebus proxy UPGRADE
Affected: <= 1.1.06
Fixed in: newer than 1.1.06
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy mssql-messagebus-proxy || rpm -q mssql-messagebus-proxy || mssql-messagebus-proxy --version
2. UPGRADE to newer than 1.1.06 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade mssql-messagebus-proxy
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade mssql-messagebus-proxy
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
systematica radius UPGRADE
Affected: <= 3.9.256.777
Fixed in: newer than 3.9.256.777
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy radius || rpm -q radius || radius --version
2. UPGRADE to newer than 3.9.256.777 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade radius
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade radius
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
systematica smtp adapter UPGRADE
Affected: <= 2.0.1.101
Fixed in: newer than 2.0.1.101
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy smtp-adapter || rpm -q smtp-adapter || smtp-adapter --version
2. UPGRADE to newer than 2.0.1.101 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade smtp-adapter
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade smtp-adapter
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-2021-35975?

financial calculator: upgrade to newer than 1.3.05; fix adapter: upgrade to newer than 2.4.0.25; http adapter: upgrade to newer than 1.8.0.15. Exact commands for each OS are on this page.

Is CVE-2021-35975 being exploited?

CVE-2021-35975 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-2021-35975 affect?

CVE-2021-35975 affects financial calculator, fix adapter, http adapter. Severity is medium (CVSS 5.3). Absolute path traversal vulnerability in the Systematica SMTP Adapter component (up to v2.0.1.101) in Systematica Radius (up to v.3.9.256.777) allows remote attackers to read arbitrary files via a full pathname in GET parameter "file" in UR

How urgent is CVE-2021-35975?

Priority 45/100. Public exploit reference; Remotely exploitable, no login, no user action

References

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