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CVE-2026-48366 Adobe CVE debrief

CVE-2026-48366 is an out-of-bounds write vulnerability in Adobe Media Encoder that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file. The vulnerability has a CVSS score of 7.8 and is classified as HIGH severity. Users of Adobe Media Encoder versions 25.6.5 and earlier, as well as 26.2.2 and earlier, should apply the necessary updates to prevent potential arbitrary code execution.

Vendor
Adobe
Product
Media Encoder
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-14
Original CVE updated
2026-07-17
Advisory published
2026-07-14
Advisory updated
2026-07-17

Who should care

Users of Adobe Media Encoder versions 25.6.5 and earlier, as well as 26.2.2 and earlier, should apply the necessary updates to prevent potential arbitrary code execution. System administrators and security teams responsible for managing Adobe Media Encoder deployments should prioritize updating to the latest version.

Technical summary

The vulnerability, tracked as CVE-2026-48366, is an out-of-bounds write issue in Adobe Media Encoder. This vulnerability has a CVSS score of 7.8 and is classified as HIGH severity. The CVSS vector is CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, indicating that the vulnerability can be exploited locally with low attack complexity and requires user interaction.

Defensive priority

High priority should be given to updating Adobe Media Encoder to the latest version, as the vulnerability can lead to arbitrary code execution.

Recommended defensive actions

  • Apply the latest updates to Adobe Media Encoder
  • Restrict user access to untrusted files
  • Monitor for suspicious file opening activity
  • Review compensating controls for exposed systems while remediation is scheduled and verified
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE record was published on 2026-07-14T21:17:00.553Z and was last modified on 2026-07-17T03:22:42.133Z. The NVD entry is currently Analyzed. The vulnerability affects Adobe Media Encoder, allowing for arbitrary code execution. Evidence is based on the official CVE record and NVD entry.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-14T21:17:00.553Z and has not been modified since then. The NVD entry is currently Analyzed.