CVE-2026-40386

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

0.14% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 3.9% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

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

2026-04-12 18:19Z4 MO AGO

Last updated

2026-04-14 16:33Z4 MO AGO

Reserved

2026-04-12

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Medium (CVSS 4.0)

CNA CVSS vector

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

Weaknesses

• CWE-191Integer Underflow (Wrap or Wraparound)Base

Data version

5.2

Document digest

76d913f29814b322c121aae15e6ffa728ba6901c08247acfe3b62fee0e8fe5d9

• github.comhttps://github.com/libexif/libexif/commit/dc6eac6e9655d14d0779d99e82d0f5f442d2f34b