# CVE-2026-112057: libdvdnav heap out-of-bounds read in dvdnav_describe_title_chapters

Source: https://junglewise.ai/threats/cve-2026-112057-libdvdnav-before-7-0-0-contains-a-heap-out-of-bounds-read  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-18. Updated: 2026-10-18  
License: CC BY 4.0 with a link back

CVE-2026-112057 · Severity: medium · CVSS 5.5 · Published 2026-10-18

libdvdnav is a library that navigates and reads DVD content from disc images. A heap out-of-bounds read vulnerability allows an attacker to provide a crafted DVD or disc image that causes applications to read memory beyond allocated bounds, potentially crashing the application or exposing sensitive data.

Vendors: [VideoLAN](https://junglewise.ai/threats/vendors/videolan).

## Quick answers

**Is CVE-2026-112057 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-112057 being exploited in the wild.

**How severe is CVE-2026-112057?** Medium severity, with a CVSS score of 5.5, published 18 October 2026.

**Which products and versions are affected?** VideoLAN Libdvdnav before 7.0.0.

**Is there a fix for CVE-2026-112057?** Yes: fixed in 7.0.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-112057 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2026-112057?** Check whether you run VideoLAN Libdvdnav 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.

## How to fix

- Fixed in 7.0.0

## Technical details

The dvdnav_describe_title_chapters function contains a heap out-of-bounds read vulnerability triggered by an oversized vts_ttn value in the VMGI (Video Manager Information) header. An attacker can craft a disc image declaring a larger VMGI title vts_ttn than the actual number of title set entries, allowing reads past the part-of-title array boundary. A fix exists in version 7.0.0 and later.

## Affected products

- VideoLAN libdvdnav before 7.0.0

## Timeline

- 2026-10-18: disclosed

## References

- [https://code.videolan.org/videolan/libdvdnav](https://code.videolan.org/videolan/libdvdnav)
- [https://code.videolan.org/videolan/libdvdnav/-/blob/6.1.1/src/searching.c](https://code.videolan.org/videolan/libdvdnav/-/blob/6.1.1/src/searching.c)

## Related threats

- [VideoLAN libdvdnav out-of-bounds read in set_PTT](https://junglewise.ai/threats/cve-2026-112058-videolan-libdvdnav-through-7-0-0-contains-an-out-of-bounds-read)