CVE-2025-1676: A vulnerability classified as critical was found in hzmanyun Education and Training System 3.1.1

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MEDIUM 6.3DOWNGRADE

CVE-2025-1676 is a medium-severity flaw (CVSS 6.3) affecting education and training system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability classified as critical was found in hzmanyun Education and Training System 3.1.1. Affected by this vulnerability is the function pdf2swf of the file /pdf2swf. The manipulation of the argument file leads to os command injection. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	6.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	2.4% (top 16%)
CISA exploited list	No
Weakness	CWE-77, CWE-78
Published	2025-02-25
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: hzmanyun

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

Am I affected?

Timeline

2025-02-25 11:15 UTCPublished CVE record published
2026-06-17 08:39 UTCUpdated Record last modified

hzmanyun education and training system DOWNGRADE

Affected: 3.1.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.1.1

1. Check installed version

apt-cache policy education-and-training-system || rpm -q education-and-training-system || education-and-training-system --version

2. No fixed release: DOWNGRADE to a release before 3.1.1 (Debian / Ubuntu)

apt-cache madison education-and-training-system sudo apt install education-and-training-system=<VERSION_BEFORE_3.1.1> sudo apt-mark hold education-and-training-system

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

dnf --showduplicates list education-and-training-system sudo dnf downgrade education-and-training-system-<VERSION_BEFORE_3.1.1> sudo dnf versionlock add education-and-training-system

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-2025-1676?

education and training system: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-1676 being exploited?

CVE-2025-1676 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-2025-1676 affect?

CVE-2025-1676 affects education and training system. Severity is medium (CVSS 6.3). A vulnerability classified as critical was found in hzmanyun Education and Training System 3.1.1. Affected by this vulnerability is the function pdf2swf of the file /pdf2swf. The manipulation of the argument file leads to os command injecti

How urgent is CVE-2025-1676?

Priority 43/100. No elevated risk signals yet.

Related CVEs

CVE-2025-1947 MEDIUM 6.3 DOWNGRADE A vulnerability classified as critical has been found in hzmanyun Education and Training System 2.1.3
CVE-2025-1946 MEDIUM 6.3 DOWNGRADE A vulnerability was found in hzmanyun Education and Training System 2.1
CVE-2025-1555 HIGH 7.3 DOWNGRADE A vulnerability classified as critical was found in hzmanyun Education and Training System 3.1.1

References

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