CVE-2018-15808: POSIM EVO 15.13 for Windows includes hardcoded database credentials for the "root" database user

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2018-15808 is a critical-severity flaw (CVSS 9.8) affecting evo. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

POSIM EVO 15.13 for Windows includes hardcoded database credentials for the "root" database user. "root" access to POSIM EVO's database may result in a breach of confidentiality, integrity, or availability or allow for attackers to remotely execute code on associated POSIM EVO clients.

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	2.3% (top 17%)
CISA exploited list	No
Weakness	CWE-798
Published	2018-08-23
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: posim

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

Am I affected?

Timeline

2018-08-23 20:29 UTCPublished CVE record published
2026-06-17 01:43 UTCUpdated Record last modified

posim evo DOWNGRADE

Affected: 15.13

Fixed in: no fixed release known

Safe to downgrade to: a release before 15.13

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 15.13 (Debian / Ubuntu)

apt-cache madison evo sudo apt install evo=<VERSION_BEFORE_15.13> sudo apt-mark hold evo

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

dnf --showduplicates list evo sudo dnf downgrade evo-<VERSION_BEFORE_15.13> sudo dnf versionlock add evo

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-2018-15808?

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

Is CVE-2018-15808 being exploited?

CVE-2018-15808 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-2018-15808 affect?

CVE-2018-15808 affects evo. Severity is critical (CVSS 9.8). POSIM EVO 15.13 for Windows includes hardcoded database credentials for the "root" database user. "root" access to POSIM EVO's database may result in a breach of confidentiality, integrity, or availability or allow for attackers to remotely

How urgent is CVE-2018-15808?

Priority 60/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

Windows vulnerabilities

Related CVEs

CVE-2018-15807 HIGH 7.8 DOWNGRADE POSIM EVO 15.13 for Windows includes an "Emergency Override" administrative account that may be accessed throu

References

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