CVE-2023-6675: Unrestricted Upload of File with Dangerous Type vulnerability in National Keep Cyber Security Services CyberMa

This month

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2023-6675 is a critical-severity flaw (CVSS 9.8) affecting cybermath. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Unrestricted Upload of File with Dangerous Type vulnerability in National Keep Cyber Security Services CyberMath allows Upload a Web Shell to a Web Server. This issue affects CyberMath: from v.1.4 before v.1.5.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 52%)
CISA exploited list	No
Weakness	CWE-434
Published	2024-02-02
Last modified	2026-06-17

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

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

Am I affected?

Timeline

2024-02-02 13:15 UTCPublished CVE record published
2026-06-17 06:51 UTCUpdated Record last modified

nationalkeep cybermath DOWNGRADE

Affected: 1.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.4

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.4 (Debian / Ubuntu)

apt-cache madison cybermath sudo apt install cybermath=<VERSION_BEFORE_1.4> sudo apt-mark hold cybermath

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

dnf --showduplicates list cybermath sudo dnf downgrade cybermath-<VERSION_BEFORE_1.4> sudo dnf versionlock add cybermath

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-2023-6675?

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

Is CVE-2023-6675 being exploited?

CVE-2023-6675 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-2023-6675 affect?

CVE-2023-6675 affects cybermath. Severity is critical (CVSS 9.8). Unrestricted Upload of File with Dangerous Type vulnerability in National Keep Cyber Security Services CyberMath allows Upload a Web Shell to a Web Server. This issue affects CyberMath: from v.1.4 before v.1.5.

How urgent is CVE-2023-6675?

Priority 51/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2024-7108 CRITICAL 9.8 UPGRADE Incorrect Authorization vulnerability in National Keep Cyber Security Services CyberMath allows Accessing Func
CVE-2024-7107 HIGH 7.5 UPGRADE Files or Directories Accessible to External Parties vulnerability in National Keep Cyber Security Services Cyb
CVE-2023-6676 HIGH 8.8 DOWNGRADE Cross-Site Request Forgery (CSRF) vulnerability in National Keep Cyber Security Services CyberMath allows Cros
CVE-2023-6673 MEDIUM 6.1 DOWNGRADE Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in National
CVE-2023-6672 MEDIUM 5.4 DOWNGRADE Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in National

References

← Back to latest CVEs