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VULNERABILITIES

CVE-2026-78002 Details

Description

A flaw was found in rsyslog. An unauthenticated remote attacker can trigger a heap buffer overflow in the RainerScript `replace()` function by sending specially crafted syslog messages. This vulnerability arises from an incorrect buffer size calculation during string replacement, causing memory corruption. Successful exploitation can lead to a denial of service (DoS) for the affected system.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
http://www.openwall.com/lists/oss-security/2026/08/29/1 CVE
https://access.redhat.com/errata/RHSA-2026:69540 [email protected]
https://access.redhat.com/errata/RHSA-2026:69541 [email protected]
https://access.redhat.com/errata/RHSA-2026:71603 [email protected]
https://access.redhat.com/security/cve/CVE-2026-78002 [email protected]

see all 7 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-131Incorrect Calculation of Buffer Size[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

11 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-78002
NVD Published Date:
Aug 27, 2026
NVD Last Modified:
Sep 25, 2026
Source:
[email protected]
CVE-2026-78002 Details - Not Deferred