CVE-2026-18495

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 ImpactpartialSuccessful exploitation gives limited 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

0.11% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 1.8% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Awaiting Analysis. NVD last modified this record on 2026-10-07.

Red Hat severity

Moderate. 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

2026-09-11 17:41Z1 MO AGO

Last updated

2026-10-07 17:41Z21 DAYS AGO

Reserved

2026-07-31

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Medium (CVSS 6.1)

CNA CVSS vector

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

Weaknesses

• CWE-122Heap-based Buffer OverflowVariant

Data version

5.2

Document digest

68e9f3b06d31622046a4caf9f743776ebde4ecbaec5150fd9c23aa52838161bd

• access.redhat.comRHSA-2026:53467https://access.redhat.com/errata/RHSA-2026:53467vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-18495vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2531414https://bugzilla.redhat.com/show_bug.cgi?id=2531414issue-trackingx_refsource_REDHAT
• gitlab.comhttps://gitlab.com/libtiff/libtiff/-/merge_requests/729
• gitlab.comhttps://gitlab.com/libtiff/libtiff/-/tree/67fd283d276f09db54dc39b9ef7b979d4b45c4b1