CVE-2020-14412: NeDi 1.9C is vulnerable to Remote Command Execution

This month

HIGH 8.8DOWNGRADE

CVE-2020-14412 is a high-severity flaw (CVSS 8.8) affecting nedi. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

NeDi 1.9C is vulnerable to Remote Command Execution. System-Snapshot.php improperly escapes shell metacharacters from a POST request. An attacker can exploit this by crafting an arbitrary payload (any system commands) that contains shell metacharacters via a POST request with a psw parameter. (This can also be exploited via CSRF.)

Why this priority

High severity

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

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	3.7% (top 10%)
CISA exploited list	No
Weakness	CWE-78
Published	2020-06-29
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: nedi

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

Am I affected?

Timeline

2020-06-29 17:15 UTCPublished CVE record published
2026-06-17 02:54 UTCUpdated Record last modified

nedi nedi DOWNGRADE

Affected: 1.9c

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.9c

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.9c (Debian / Ubuntu)

apt-cache madison nedi sudo apt install nedi=<VERSION_BEFORE_1.9c> sudo apt-mark hold nedi

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

dnf --showduplicates list nedi sudo dnf downgrade nedi-<VERSION_BEFORE_1.9c> sudo dnf versionlock add nedi

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-2020-14412?

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

Is CVE-2020-14412 being exploited?

CVE-2020-14412 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-2020-14412 affect?

CVE-2020-14412 affects nedi. Severity is high (CVSS 8.8). NeDi 1.9C is vulnerable to Remote Command Execution. System-Snapshot.php improperly escapes shell metacharacters from a POST request. An attacker can exploit this by crafting an arbitrary payload (any system commands) that contains shell me

How urgent is CVE-2020-14412?

Priority 53/100. High severity

Software pages

PHP vulnerabilities

Related CVEs

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CVE-2021-26752 HIGH 8.8 DOWNGRADE NeDi 1.9C allows an authenticated user to execute operating system commands in the Nodes Traffic function on t
CVE-2021-26751 HIGH 8.8 DOWNGRADE NeDi 1.9C allows an authenticated user to perform a SQL Injection in the Monitoring History function on the en
CVE-2020-15037 MEDIUM 5.4 DOWNGRADE NeDi 1.9C is vulnerable to cross-site scripting (XSS) attack

References

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