CVE-2026-62289

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

0.30% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 22.7% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Deferred. NVD last modified this record on 2026-10-22.

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

2026-08-18 21:19Z2 MO AGO

Last updated

2026-08-19 16:51Z2 MO AGO

Reserved

2026-07-13

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

Medium (CVSS 4.3)

CNA CVSS vector

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

Weaknesses

• CWE-191Integer Underflow (Wrap or Wraparound)Base
• CWE-617Reachable AssertionBase

Data version

5.2

Document digest

61b0c05d3a5f54e4f98855934b34aa3a3bdf5dc8d7ad3a62f3abd6a19b66832b

• github.comhttps://github.com/strukturag/libheif/security/advisories/GHSA-jc8f-p23p-5hjgx_refsource_CONFIRM
• github.comhttps://github.com/strukturag/libheif/commit/f01870c1d7323a3003796d58eba7fff502be994cx_refsource_MISC
• github.comhttps://github.com/strukturag/libheif/releases/tag/v1.23.1x_refsource_MISC