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CRITICAL

CVE-2024-12084

CVSS v3

9.8

CRITICAL

EPSS Score

72.1 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • rsyncUbuntu:24.10all versions · fixed in 3.3.0-1ubuntu0.1

Vendor advisories

  • CVE-2024-12084 Red Hat Product Security15 products fixed

    rsync: Heap Buffer Overflow in Rsync due to Improper Checksum Length Handling

  • RHBA-2025:6470 Red Hat Product Security15 products fixed

    Red Hat Bug Fix Advisory: rsync bug fix and enhancement update

Full record on NVD

Description

A heap-based buffer overflow flaw was found in the rsync daemon. This issue is due to improper handling of attacker-controlled checksum lengths (s2length) in the code. When MAX_DIGEST_LEN exceeds the fixed SUM_LENGTH (16 bytes), an attacker can write out of bounds in the sum2 buffer.

Technical details

Published
2025-01-15

Frequently asked questions

What is CVE-2024-12084?

A heap-based buffer overflow flaw was found in the rsync daemon. This issue is due to improper handling of attacker-controlled checksum lengths (s2length) in the code. When MAX_DIGEST_LEN exceeds the fixed SUM_LENGTH (16 bytes), an attacker can write out of bounds in the sum2 buffer.

Is CVE-2024-12084 actively exploited?

Active exploitation of CVE-2024-12084 has not been confirmed. Its EPSS score was 72.1% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2024-12084?

CVE-2024-12084 has a CVSS v3 base score of 9.8 (CRITICAL severity).

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