CVE-2019-15503: cgi-cpn/xcoding/prontus_videocut.cgi in AltaVoz Prontus (aka ProntusCMS) through 12.0.3.0 has "Improper Neutra

Q: How do I fix CVE-2019-15503?

prontuscms: upgrade to newer than 12.0.3.0. Exact commands for each OS are on this page.

Q: Is CVE-2019-15503 being exploited?

CVE-2019-15503 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-2019-15503 affect?

CVE-2019-15503 affects prontuscms. Severity is critical (CVSS 9.8). cgi-cpn/xcoding/prontus_videocut.cgi in AltaVoz Prontus (aka ProntusCMS) through 12.0.3.0 has "Improper Neutralization of Special Elements used in an OS Command," allowing attackers to execute OS commands via an HTTP GET parameter.

Q: How urgent is CVE-2019-15503?

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

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2019-15503 is a critical-severity flaw (CVSS 9.8) affecting prontuscms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

cgi-cpn/xcoding/prontus_videocut.cgi in AltaVoz Prontus (aka ProntusCMS) through 12.0.3.0 has "Improper Neutralization of Special Elements used in an OS Command," allowing attackers to execute OS commands via an HTTP GET parameter.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.4% (top 16%)
CISA exploited list	No
Weakness	CWE-78
Published	2019-08-26
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: altavoz

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

Am I affected?

Timeline

2019-08-26 18:15 UTCPublished CVE record published
2026-06-17 02:20 UTCUpdated Record last modified

altavoz prontuscms UPGRADE

Affected: <= 12.0.3.0

Fixed in: newer than 12.0.3.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 12.0.3.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade prontuscms

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade prontuscms

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-2019-15503?

prontuscms: upgrade to newer than 12.0.3.0. Exact commands for each OS are on this page.

Is CVE-2019-15503 being exploited?

CVE-2019-15503 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-2019-15503 affect?

CVE-2019-15503 affects prontuscms. Severity is critical (CVSS 9.8). cgi-cpn/xcoding/prontus_videocut.cgi in AltaVoz Prontus (aka ProntusCMS) through 12.0.3.0 has "Improper Neutralization of Special Elements used in an OS Command," allowing attackers to execute OS commands via an HTTP GET parameter.

How urgent is CVE-2019-15503?

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

References

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