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
Affected Vendors & Products
References
History
Thu, 27 Aug 2026 18:00:00 +0000
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threat_severity
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ssvc
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Thu, 27 Aug 2026 16:45:00 +0000
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| 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. | |
| Title | Rsyslog: rsyslog: denial of service via heap buffer overflow in rainerscript replace() function | |
| First Time appeared |
Redhat
Redhat enterprise Linux |
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| Weaknesses | CWE-131 | |
| CPEs | cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:6 cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
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| Vendors & Products |
Redhat
Redhat enterprise Linux |
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| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: redhat
Published: 2026-08-27T16:12:59.102Z
Updated: 2026-08-27T18:29:34.218Z
Reserved: 2026-08-21T19:35:37.617Z
Link: CVE-2026-78002
Updated: 2026-08-27T18:29:29.448Z
Status : Awaiting Analysis
Published: 2026-08-27T17:20:29.367
Modified: 2026-08-28T18:58:27.140
Link: CVE-2026-78002