CVE-2025-0994: Trimble Cityworks Deserialization Vulnerability

Patch now

HIGH 8.8EXPLOITEDUPGRADE

CVE-2025-0994 is a high-severity flaw (CVSS 8.8) affecting cityworks, reported as exploited in the wild. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Trimble Cityworks versions prior to 15.8.9 and Cityworks with office companion versions prior to 23.10 are vulnerable to a deserialization vulnerability. This could allow an authenticated user to perform a remote code execution attack against a customer’s Microsoft Internet Information Services (IIS) web server.

Why this priority

High severity
EPSS top 2%: very likely to be exploited
Exploited in the wild (CISA KEV)

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	31.3% (top 2%)
CISA exploited list	Yes, fix due 2025-02-28
Weakness	CWE-502
Published	2025-02-06
Last modified	2026-06-17

Publisher (CNA): ICS-CERT · Vendor: trimble

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

Am I affected?

Timeline

2025-02-06 16:15 UTCPublished CVE record published
2025-02-07Exploited Added to the CISA Known Exploited Vulnerabilities list
2025-02-28Deadline CISA due date for US federal agencies to patch
2026-06-17 08:27 UTCUpdated Record last modified

trimble cityworks UPGRADE

Affected: < 15.8.9 · >= 23.0 and < 23.10

Fixed in: 15.8.9, 23.10

Safe to downgrade to: a release before 23.0

1. Check installed version

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

2. UPGRADE to 15.8.9 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade cityworks

Note

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

3. If no update is available yet, DOWNGRADE to a release before 23.0 (Debian / Ubuntu)

apt-cache madison cityworks sudo apt install cityworks=<VERSION_BEFORE_23.0> sudo apt-mark hold cityworks

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list cityworks sudo dnf downgrade cityworks-<VERSION_BEFORE_23.0> sudo dnf versionlock add cityworks

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.

Exact fixes by distribution

Fedora 46 · opensips · FIXED · 4.0.3-1.fc46 · FEDORA-2026-6700a0026c · source

sudo dnf upgrade --advisory=FEDORA-2026-6700a0026c

Fedora ELN · ibus-typing-booster · FIXED · 2.31.3-1.eln159 · FEDORA-2026-c895c68d60 · source

sudo dnf upgrade --advisory=FEDORA-2026-c895c68d60

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

GitHub PoC: rxerium/CVE-2025-0994 (4 stars)

Verify at the official source NVD · CVE Program · CISA KEV catalog · 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-2025-0994?

cityworks: upgrade to 15.8.9, 23.10. Exact commands for each OS are on this page.

Is CVE-2025-0994 being exploited?

Yes. CVE-2025-0994 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.

What does CVE-2025-0994 affect?

CVE-2025-0994 affects cityworks. Severity is high (CVSS 8.8). Trimble Cityworks versions prior to 15.8.9 and Cityworks with office companion versions prior to 23.10 are vulnerable to a deserialization vulnerability. This could allow an authenticated user to perform a remote code execution attack again

How urgent is CVE-2025-0994?

Priority 80/100. High severity; EPSS top 2%: very likely to be exploited; Exploited in the wild (CISA KEV)

References

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