How severe is CVE-2019-15503?

CVE-2019-15503 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-15503 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-15503?

CVE-2019-15503 affects Altavoz Prontuscms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-15503?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2019-15503 published?

CVE-2019-15503 was published on 2019-08-26 and last updated on 2026-06-17.

CVE-2019-15503

CVE-2019-15503 is a critical-severity vulnerability in Altavoz Prontuscms with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Altavoz Prontuscms
Published: 2019-08-26
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2019-15503?: 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 severe is CVE-2019-15503?: CVE-2019-15503 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-15503 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-15503?: CVE-2019-15503 affects Altavoz Prontuscms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-15503?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2019-15503 published?: CVE-2019-15503 was published on 2019-08-26 and last updated on 2026-06-17.

References

https://blog.nivel4.com/investigaciones/vulnerabilidad-de-ejecucion-de-comandos-remotos-rce-en-prontuscms/

Affected products (1)

cpe:2.3:a:altavoz:prontuscms:*:*:*:*:*:*:*:*

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