CVE-2026-103635

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.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• 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

0.39% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 33.3% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Undergoing Analysis. NVD last modified this record on 2026-10-16.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

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

2026-10-10 10:23Z19 DAYS AGO

Last updated

2026-10-16 15:28Z13 DAYS AGO

Reserved

2026-09-30

Assigning CNA

apache

Record state

PUBLISHED

Severity

Critical (CVSS 9.1)

CNA CVSS vector

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

Weaknesses

• CWE-125Out-of-bounds ReadBase
• CWE-190Integer Overflow or WraparoundBase

Data version

5.2

Document digest

47fb09c09e6c7a6a11f4fe7c88456803a43f3c9029989c066d940608b86230f1

• lists.apache.orghttps://lists.apache.org/thread/15b86y9jstco39kzppjw7l5kvhjvwqvvvendor-advisory
• github.comhttps://github.com/apache/datasketches-cpp/releases/tag/5.3.0release-notes
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/10/10/5