CVE-2026-78002

CVE.org · Published

Record status: Published
Identifier year (not publication year): 2026
Source publication: Aug 27, 2026
Source updated: Oct 21, 2026
Imported by cveboard: Oct 24, 2026
Source snapshot: cve_2026-10-24_midnight_baseline · Oct 24, 2026

CNA source text (English)

Rsyslog: rsyslog: denial of service via heap buffer overflow in rainerscript replace() function

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.

Scoped product and version facts

Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.

Exploitation unknown; this catalogue does not assess exploitation.

Red Hat Enterprise Linux 10

Vendor: Red Hat
Product: Red Hat Enterprise Linux 10
Platforms: Unknown
Default status: affected
Package: rsyslog
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 10 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:8.2510.0-5.el10_2.2	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 10.0 Extended Update Support

Vendor: Red Hat
Product: Red Hat Enterprise Linux 10.0 Extended Update Support
Platforms: Unknown
Default status: affected
Package: rsyslog
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 10.0 Extended Update Support · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:8.2412.0-1.el10_0.2	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 8

Vendor: Red Hat
Product: Red Hat Enterprise Linux 8
Platforms: Unknown
Default status: affected
Package: rsyslog
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 8 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:8.2102.0-15.el8_10.3	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Vendor: Red Hat
Product: Red Hat Enterprise Linux 8.8 Telecommunications Update Service
Platforms: Unknown
Default status: affected
Package: rsyslog
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 8.8 Telecommunications Update Service · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:8.2102.0-13.el8_8.1	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions

Vendor: Red Hat
Product: Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
Platforms: Unknown
Default status: affected
Package: rsyslog
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:8.2102.0-13.el8_8.1	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 9

Vendor: Red Hat
Product: Red Hat Enterprise Linux 9
Platforms: Unknown
Default status: affected
Package: rsyslog
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 9 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:8.2510.0-2.el9_8.2	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Vendor: Red Hat
Product: Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
Platforms: Unknown
Default status: affected
Package: rsyslog
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:8.2102.0-113.el9_2.3	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 9.6 Extended Update Support

Vendor: Red Hat
Product: Red Hat Enterprise Linux 9.6 Extended Update Support
Platforms: Unknown
Default status: affected
Package: rsyslog
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 9.6 Extended Update Support · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:8.2412.0-1.el9_6.2	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Update Infrastructure 5

Vendor: Red Hat
Product: Red Hat Update Infrastructure 5
Platforms: Unknown
Default status: affected
Package: rhui5/haproxy-rhel9
Package collection: https://catalog.redhat.com/software/containers/

Red Hat Update Infrastructure 5 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
1790241900	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 6

Vendor: Red Hat
Product: Red Hat Enterprise Linux 6
Platforms: Unknown
Default status: unaffected
Package: rsyslog
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Red Hat Enterprise Linux 6

Vendor: Red Hat
Product: Red Hat Enterprise Linux 6
Platforms: Unknown
Default status: unaffected
Package: rsyslog7
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Red Hat Enterprise Linux 7

Vendor: Red Hat
Product: Red Hat Enterprise Linux 7
Platforms: Unknown
Default status: affected
Package: rsyslog
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.