CVE-2017-5358: Stack-based buffer overflows in php_Easycom5_3_0.dll in EasyCom for PHP 4.0.0.29 allows remote attackers to ex

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CRITICAL 9.8REMOTEDOWNGRADE

CVE-2017-5358 is a critical-severity flaw (CVSS 9.8) affecting easycom for php. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Stack-based buffer overflows in php_Easycom5_3_0.dll in EasyCom for PHP 4.0.0.29 allows remote attackers to execute arbitrary code via the server argument to the (1) i5_connect, (2) i5_pconnect, or (3) i5_private_connect API function.

Why this priority

Critical severity
EPSS top 4%: very likely to be exploited
Public exploit reference
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	12.1% (top 4%)
CISA exploited list	No
Weakness	CWE-119
Published	2017-03-15
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: easycom-aura

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

Am I affected?

Timeline

2017-03-15 15:59 UTCPublished CVE record published
2026-06-17 01:20 UTCUpdated Record last modified

easycom-aura easycom for php DOWNGRADE

Affected: 4.0.0.29

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.0.0.29

1. Check installed version

apt-cache policy easycom-for-php || rpm -q easycom-for-php || easycom-for-php --version

2. No fixed release: DOWNGRADE to a release before 4.0.0.29 (Debian / Ubuntu)

apt-cache madison easycom-for-php sudo apt install easycom-for-php=<VERSION_BEFORE_4.0.0.29> sudo apt-mark hold easycom-for-php

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

dnf --showduplicates list easycom-for-php sudo dnf downgrade easycom-for-php-<VERSION_BEFORE_4.0.0.29> sudo dnf versionlock add easycom-for-php

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: EasyCom For PHP 4.0.0 - Buffer Overflow (PoC)

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-2017-5358?

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

Is CVE-2017-5358 being exploited?

CVE-2017-5358 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-2017-5358 affect?

CVE-2017-5358 affects easycom for php. Severity is critical (CVSS 9.8). Stack-based buffer overflows in php_Easycom5_3_0.dll in EasyCom for PHP 4.0.0.29 allows remote attackers to execute arbitrary code via the server argument to the (1) i5_connect, (2) i5_pconnect, or (3) i5_private_connect API function.

How urgent is CVE-2017-5358?

Priority 68/100. Critical severity; EPSS top 4%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

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References

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