CVE-2026-68516General

LOWCVSS 6.5 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. From version 3.4.0 through 3.4.13, a crafted HTJ2K-compressed EXR can crash OpenEXR during normal decode. An HTJ2K-compressed EXR whose JPEG 2000 SIZ fields place the first tile outside the visible image can reach invalid tile and codeblock geometry in the vendored OpenJPH AVX2 decoder, causing a stack out-of-bounds write and denial of service. OpenEXR's HTJ2K path validates the decoded codestream dimensions against the EXR chunk size, but it does not reject SIZ image-offset/tile-grid geometry where the first tile does not intersect the image. This issue is fixed in version 3.4.14.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-121CWE-787

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

Threat summary

  • 3 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Technical details provided in 1 signal
  • General: 2 classified signals
  • Disclosure: 1 classified signal
  • Peaked 1d ago at 2 mentions (2026-08-24); latest day: 1
  • 3 total mentions across 2 days

Deep dive

Activity timeline3 mentions / 2d
01122Mentions · 2026-08-24: 2Mentions · 2026-08-25: 1Technical Details · 2026-08-25: 108-2408-25
Signal classification2 categories
General
266.7%
Disclosure
133.3%
Referenced assets3 URLs
Classification over time
DateTotalLabels
2026-08-242
General2
2026-08-251
Disclosure1
Full discourse3 posts
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-68516 Denial of Service in OpenEXR 3.4.0-3.4.13 via Crafted HTJ2K EXR https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-68516

    Post summary

    The text announces a denial‑of‑service vulnerability in OpenEXR 3.4.0‑3.4.13 that can be triggered by crafted HTJ2K EXR files; no exploitation evidence or patch information is provided.

    00002136
    4.1K followersView on X
  • Infoflowcloud@infoflowcloud
    General

    🚨*CVE* CVE-2026-68516 OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. From version 3.4.0 through 3.4.13, a c… https://www.cve.org/CVERecord?id=CVE-2026-68516 ----- Traducción: CVE-2026-68516 Ope… https://infoflow.cloud`

    Post summary

    The text merely points to the existence of CVE‑2026‑68516 for OpenEXR with no further technical context.

    0000031
    102 followersView on X
  • CVE@CVEnew
    General

    CVE-2026-68516 OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. From version 3.4.0 through 3.4.13, a c… https://www.cve.org/CVERecord?id=CVE-2026-68516

    Post summary

    The entry references CVE‑2026‑68516 for specific OpenEXR versions but offers no detailed technical or mitigation information.

    000001.3K
    58.0K followersView on X

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