CVE-2026-105240

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

0.80% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 56.5% of scored records. A rank, not a probability.

NVD base score

5.3 (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:N/I:L/A:N

NVD analysis status

Analyzed. NVD last modified this record on 2026-10-09.

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

2026-10-06 19:47Z22 DAYS AGO

Last updated

2026-10-07 16:27Z21 DAYS AGO

Reserved

2026-10-04

Assigning CNA

apache

Record state

PUBLISHED

Severity

Medium (CVSS 5.3)

CNA CVSS vector

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

Weaknesses

• CWE-158Improper Neutralization of Null Byte or NUL CharacterVariant

Data version

5.2

Document digest

f5ae9e73b2c1102c22ad62f0f626717dcf9221d01f90ed8698e2ddc4c35e41e5

• github.comhttps://github.com/apache/logging-log4net/pull/315patch
• github.comhttps://github.com/apache/logging-log4net/commit/6046fe9d7f353b49fe995361c071ec2eea8f7ef6patch
• lists.apache.orghttps://lists.apache.org/thread.html/gyw2d4ppy82t1vlpdknkfd1nmzp21z17vendor-advisory
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/10/07/18