CVE-2026-61548

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.94% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 60.7% of scored records. A rank, not a probability.

NVD base score

8.1 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Awaiting Analysis. NVD last modified this record on 2026-09-24.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-09-18 16:54Z1 MO AGO

Last updated

2026-09-21 20:49Z1 MO AGO

Reserved

2026-07-10

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

High (CVSS 8.1)

CNA CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

• CWE-121Stack-based Buffer OverflowVariant
• CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')Base

Data version

5.2

Document digest

c4149ef75cf4804ec6f00f5d0700cacdf4e285740202fe37c5e4120dca8f9c62

• github.comhttps://github.com/rsyslog/rsyslog/security/advisories/GHSA-8qmr-c66f-g368x_refsource_CONFIRM
• github.comhttps://github.com/rsyslog/rsyslog/pull/6991x_refsource_MISC
• github.comhttps://github.com/rsyslog/rsyslog/commit/bcda60a3692efdf0c8e44102528f5a0ebe0dec6dx_refsource_MISC
• github.comhttps://github.com/rsyslog/rsyslog/releases/tag/v8.2606.0x_refsource_MISC
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/07/20/1