CVE-2024-10442: Off-by-one error vulnerability in the transmission component in Synology Replication Service before 1.0.12-006

Q: How do I fix CVE-2024-10442?

unified controller: upgrade to 3.1.4-23079; replication service: upgrade to 1.2.2-0353; replication service: upgrade to 1.3.0-0423. Exact commands for each OS are on this page.

Q: Is CVE-2024-10442 being exploited?

CVE-2024-10442 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-2024-10442 affect?

CVE-2024-10442 affects unified controller, replication service, replication service. Severity is critical (CVSS 10.0). Off-by-one error vulnerability in the transmission component in Synology Replication Service before 1.0.12-0066, 1.2.2-0353 and 1.3.0-0423 and Synology Unified Controller (DSMUC) before 3.1.4-23079 allows remote attackers to execute arbitra

Q: How urgent is CVE-2024-10442?

Priority 58/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 10.0REMOTEUPGRADEUPGRADEUPGRADE

CVE-2024-10442 is a critical-severity flaw (CVSS 10.0) affecting unified controller, replication service, replication service. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Off-by-one error vulnerability in the transmission component in Synology Replication Service before 1.0.12-0066, 1.2.2-0353 and 1.3.0-0423 and Synology Unified Controller (DSMUC) before 3.1.4-23079 allows remote attackers to execute arbitrary code, potentially leading to a broader impact across the system via unspecified vectors.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	10.0 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.4% (top 27%)
CISA exploited list	No
Weakness	CWE-193
Published	2025-03-19
Last modified	2026-06-17

Publisher (CNA): Synology Inc. · Vendor: syncology · synology

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

Am I affected?

Timeline

2025-03-19 03:15 UTCPublished CVE record published
2026-06-17 06:55 UTCUpdated Record last modified

synology unified controller UPGRADE

Affected: < 3.1.4-23079

Fixed in: 3.1.4-23079

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy unified-controller || rpm -q unified-controller || unified-controller --version

2. UPGRADE to 3.1.4-23079 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade unified-controller

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade unified-controller

Note

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

synology replication service UPGRADE

Affected: <= 1.0.12-0066 · < 1.2.2-0353

Fixed in: 1.2.2-0353

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy replication-service || rpm -q replication-service || replication-service --version

2. UPGRADE to 1.2.2-0353 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade replication-service

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade replication-service

Note

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

syncology replication service UPGRADE

Affected: < 1.3.0-0423

Fixed in: 1.3.0-0423

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy replication-service || rpm -q replication-service || replication-service --version

2. UPGRADE to 1.3.0-0423 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade replication-service

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade replication-service

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-2024-10442?

unified controller: upgrade to 3.1.4-23079; replication service: upgrade to 1.2.2-0353; replication service: upgrade to 1.3.0-0423. Exact commands for each OS are on this page.

Is CVE-2024-10442 being exploited?

CVE-2024-10442 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-2024-10442 affect?

CVE-2024-10442 affects unified controller, replication service, replication service. Severity is critical (CVSS 10.0). Off-by-one error vulnerability in the transmission component in Synology Replication Service before 1.0.12-0066, 1.2.2-0353 and 1.3.0-0423 and Synology Unified Controller (DSMUC) before 3.1.4-23079 allows remote attackers to execute arbitra

How urgent is CVE-2024-10442?

Priority 58/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

Synology vulnerabilities

References

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