CVE-2021-36719: PineApp - Mail Secure - The attacker must be logged in as a user to the Pineapp system

Q: How do I fix CVE-2021-36719?

mail secure: upgrade to 5.2.1. Exact commands for each OS are on this page.

Q: Is CVE-2021-36719 being exploited?

CVE-2021-36719 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-2021-36719 affect?

CVE-2021-36719 affects mail secure. Severity is high (CVSS 8.8). PineApp - Mail Secure - The attacker must be logged in as a user to the Pineapp system. The attacker exploits the vulnerable nicUpload.php file to upload a malicious file,Thus taking over the server and running remote code.

This month

HIGH 8.8UPGRADE

CVE-2021-36719 is a high-severity flaw (CVSS 8.8) affecting mail secure. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PineApp - Mail Secure - The attacker must be logged in as a user to the Pineapp system. The attacker exploits the vulnerable nicUpload.php file to upload a malicious file,Thus taking over the server and running remote code.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.1% (top 34%)
CISA exploited list	No
Weakness	CWE-434
Published	2021-12-08
Last modified	2026-06-17

Publisher (CNA): Israel National Cyber Directorate · Vendor: cybonet

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

Am I affected?

Timeline

2021-12-08 20:15 UTCPublished CVE record published
2026-06-17 03:59 UTCUpdated Record last modified

cybonet mail secure UPGRADE

Affected: < 5.2.1

Fixed in: 5.2.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy mail-secure || rpm -q mail-secure || mail-secure --version

2. UPGRADE to 5.2.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade mail-secure

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mail-secure

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-2021-36719?

mail secure: upgrade to 5.2.1. Exact commands for each OS are on this page.

Is CVE-2021-36719 being exploited?

CVE-2021-36719 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-2021-36719 affect?

CVE-2021-36719 affects mail secure. Severity is high (CVSS 8.8). PineApp - Mail Secure - The attacker must be logged in as a user to the Pineapp system. The attacker exploits the vulnerable nicUpload.php file to upload a malicious file,Thus taking over the server and running remote code.

How urgent is CVE-2021-36719?

Priority 47/100. High severity

Software pages

PHP vulnerabilities

Related CVEs

CVE-2021-36720 MEDIUM 6.1 UPGRADE PineApp - Mail Secure - Attacker sending a request to :/blocking.php?url=<script>alert(1)</script> and stealin

References

← Back to latest CVEs