CVE-2020-24842: PNPSCADA 2.200816204020 allows cross-site scripting (XSS), which can execute arbitrary JavaScript in the victi

Routine

MEDIUM 6.1DOWNGRADE

CVE-2020-24842 is a medium-severity flaw (CVSS 6.1) affecting pnpscada. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PNPSCADA 2.200816204020 allows cross-site scripting (XSS), which can execute arbitrary JavaScript in the victim's browser.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.7% (top 46%)
CISA exploited list	No
Weakness	CWE-79
Published	2021-02-10
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: sdgc

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

Am I affected?

Timeline

2021-02-10 22:15 UTCPublished CVE record published
2026-06-17 03:06 UTCUpdated Record last modified

sdgc pnpscada DOWNGRADE

Affected: 2.200816204020

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.200816204020

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.200816204020 (Debian / Ubuntu)

apt-cache madison pnpscada sudo apt install pnpscada=<VERSION_BEFORE_2.200816204020> sudo apt-mark hold pnpscada

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

dnf --showduplicates list pnpscada sudo dnf downgrade pnpscada-<VERSION_BEFORE_2.200816204020> sudo dnf versionlock add pnpscada

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-2020-24842?

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

Is CVE-2020-24842 being exploited?

CVE-2020-24842 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-2020-24842 affect?

CVE-2020-24842 affects pnpscada. Severity is medium (CVSS 6.1). PNPSCADA 2.200816204020 allows cross-site scripting (XSS), which can execute arbitrary JavaScript in the victim's browser.

How urgent is CVE-2020-24842?

Priority 35/100. No elevated risk signals yet.

Related CVEs

CVE-2020-24841 CRITICAL 9.8 DOWNGRADE PNPSCADA 2.200816204020 allows SQL injection via parameter 'interf' in /browse.jsp
CVE-2023-1934 CRITICAL 9.8 DOWNGRADE The PnPSCADA system, a product of SDG Technologies CC, is afflicted by a critical unauthenticated error-based

References

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