CVE-2024-53977: A vulnerability has been identified in ModelSim (All versions < V2025.1), Questa (All versions < V2025.1)

Q: How do I fix CVE-2024-53977?

modelsim: upgrade to 2025.1; questa: upgrade to 2025.1. Exact commands for each OS are on this page.

Q: Is CVE-2024-53977 being exploited?

CVE-2024-53977 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-2024-53977 affect?

CVE-2024-53977 affects modelsim, questa. Severity is medium (CVSS 6.7). A vulnerability has been identified in ModelSim (All versions < V2025.1), Questa (All versions < V2025.1). An example setup script contained in affected applications allows a specific executable file to be loaded from the current working di

Q: How urgent is CVE-2024-53977?

Priority 25/100. No elevated risk signals yet.

Routine

MEDIUM 6.7UPGRADEUPGRADE

CVE-2024-53977 is a medium-severity flaw (CVSS 6.7) affecting modelsim, questa. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability has been identified in ModelSim (All versions < V2025.1), Questa (All versions < V2025.1). An example setup script contained in affected applications allows a specific executable file to be loaded from the current working directory. This could allow an authenticated local attacker to inject arbitrary code and escalate privileges in installations where administrators or processes with elevated privileges launch the script from a us

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.7 (Medium)
Attack vector	Local
Attack complexity	High
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.2% (top 95%)
CISA exploited list	No
Weakness	CWE-427
Published	2025-02-11
Last modified	2026-06-17

Publisher (CNA): Siemens AG · Vendor: siemens

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

Am I affected?

Timeline

2025-02-11 11:15 UTCPublished CVE record published
2026-06-17 08:09 UTCUpdated Record last modified

siemens modelsim UPGRADE

Affected: < 2025.1

Fixed in: 2025.1

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 2025.1 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade modelsim

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

siemens questa UPGRADE

Affected: < 2025.1

Fixed in: 2025.1

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 2025.1 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade questa

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-2024-53977?

modelsim: upgrade to 2025.1; questa: upgrade to 2025.1. Exact commands for each OS are on this page.

Is CVE-2024-53977 being exploited?

CVE-2024-53977 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-2024-53977 affect?

CVE-2024-53977 affects modelsim, questa. Severity is medium (CVSS 6.7). A vulnerability has been identified in ModelSim (All versions < V2025.1), Questa (All versions < V2025.1). An example setup script contained in affected applications allows a specific executable file to be loaded from the current working di

How urgent is CVE-2024-53977?

Priority 25/100. No elevated risk signals yet.

Software pages

Siemens vulnerabilities

Related CVEs

CVE-2024-47196 MEDIUM 6.7 UPGRADE UPGRADE A vulnerability has been identified in ModelSim (All versions < V2025.2), Questa (All versions < V2025.2)
CVE-2024-47195 MEDIUM 6.7 UPGRADE UPGRADE A vulnerability has been identified in ModelSim (All versions < V2024.3), Questa (All versions < V2024.3)
CVE-2024-47194 MEDIUM 6.7 UPGRADE UPGRADE A vulnerability has been identified in ModelSim (All versions < V2024.3), Questa (All versions < V2024.3)

References

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