CVE-2026-27622
OpenEXR DeepScanLine decode may overflow the sample buffer due to 32-bit wrap.
Is CVE-2026-27622 being exploited?
Not confirmed. CVE-2026-27622 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.20% probability of exploitation in the next 30 days.
How severe is CVE-2026-27622?
CVE-2026-27622 is rated High with a CVSS score of 8.4. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-27622?
Yes. A fix has been recorded for CVE-2026-27622. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-27622 affect?
CVE-2026-27622 affects OpenEXR (CompositeDeepScanLine decode). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-27622?
Upgrade to OpenEXR 3.2.6+, 3.3.8+, or 3.4.6+
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Memory corruption risk: decoding may overrun the buffer with attacker-controlled counts, causing crash or potential code execution.
Patch when possible
- affected>= 2.3.0 and < 3.2.6
- affected>= 3.3.0 and < 3.3.8
- affected>= 3.4.0 and < 3.4.6
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.