Quick answers
- Is CVE-2026-124311 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-124311 being exploited in the wild.
- How severe is CVE-2026-124311?
- Medium severity, with a CVSS score of 5.5, published 7 November 2026.
- Which products and versions are affected?
- Fraunhofer HHI VVdeC through 3.2.1.
- Is there a fix for CVE-2026-124311?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-124311 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-124311?
- Check whether you run Fraunhofer HHI VVdeC at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A NULL pointer dereference exists in the InterPrediction::xPredInterBlk function when processing a crafted VVC bitstream that activates a new sequence parameter set (SPS) with sps_ref_wraparound_enabled_flag set. The decoder attempts to read from PIC_RECON_WRAP buffers that have not been allocated, resulting in a crash. The vulnerability requires a malicious bitstream supplied to the decoder but no authentication or user interaction beyond opening the file.
Affected products
- Fraunhofer HHI VVdeC through 3.2.1
Timeline
- 2026-11-07: disclosed