CVE-2026-5496: Labcenter Electronics Proteus PDSPRJ File Parsing Type Confusion Remote Code Execution Vulnerability

Routine

HIGH 7.8DOWNGRADE

CVE-2026-5496 is a high-severity flaw (CVSS 7.8) affecting proteus. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Labcenter Electronics Proteus PDSPRJ File Parsing Type Confusion Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Labcenter Electronics Proteus. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of PDSPRJ files. The issue results from th

Why this priority

High severity

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

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 85%)
CISA exploited list	No
Weakness	CWE-843
Published	2026-04-11
Last modified	2026-10-26

Publisher (CNA): Zero Day Initiative · Vendor: labcenter

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-11 01:16 UTCPublished CVE record published
2026-10-26 00:10 UTCUpdated Record last modified

labcenter proteus DOWNGRADE

Affected: 8.17 sp5

Fixed in: no fixed release known

Safe to downgrade to: a release before 8.17

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 8.17 (Debian / Ubuntu)

apt-cache madison proteus sudo apt install proteus=<VERSION_BEFORE_8.17> sudo apt-mark hold proteus

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

dnf --showduplicates list proteus sudo dnf downgrade proteus-<VERSION_BEFORE_8.17> sudo dnf versionlock add proteus

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-2026-5496?

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

Is CVE-2026-5496 being exploited?

CVE-2026-5496 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-2026-5496 affect?

CVE-2026-5496 affects proteus. Severity is high (CVSS 7.8). Labcenter Electronics Proteus PDSPRJ File Parsing Type Confusion Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Labcenter Electronics Proteus. User inte

How urgent is CVE-2026-5496?

Priority 31/100. High severity

References

← Back to latest CVEs