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Vulnerabilities

Vulnerability · CVE-2024-12084

A heap-based buffer overflow flaw was found in the rsync daemon.

Published Jan 15, 2025 · catalog updated Oct 21, 2026 · A heap-based buffer overflow

Last checked Oct 26, 2026. A connected source was read within the last 7 days.

Check this week

CVE-2024-12084 is not in CISA KEV. FIRST estimates a 72.51% chance of exploitation in the next 30 days. Check whether you run A heap-based buffer overflow.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (A heap-based buffer overflow).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Critical9.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
72.51%
Remediation
Version ranges on file
Affected products
cpe almalinux/almalinux · cpe archlinux/arch linux · cpe gentoo/linux · cpe nixos/nixos · cpe redhat/enterprise linux · cpe samba/rsync

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe almalinux/almalinux10.0
  • cpe archlinux/arch linuxversion unspecified
  • cpe gentoo/linuxversion unspecified
  • cpe nixos/nixos24.11
  • cpe nixos/nixos< 24.11
  • cpe redhat/enterprise linux10.0
  • cpe samba/rsync3.2.7
  • cpe samba/rsync3.3.0

How to fix CVE-2024-12084

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2024-12084 is not in CISA KEV. FIRST estimates a 72.51% chance of exploitation in the next 30 days. Check whether you run A heap-based buffer overflow.

Which versions are affected?

Compare what you have installed with redhat/enterprise linux 10.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-122: Heap-based Buffer Overflow; CWE-787: Out-of-bounds Write. EPSS 72.51%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 15, 2025 · NIST NVD

    Detected

    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.

  2. Oct 21, 2026 · NIST NVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2024-12084

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2024-12084

    30-day exploitation probability 72.51%

    first.org
  • NIST NVDVulnerability recordCVE-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 buf

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 26, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSOct 23, 2026
  • CVE.orgOct 21, 2026
  • NIST NVDOct 21, 2026