Risk Scores
CVSS v3.1
7.599999904632568
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian | libpng1.6 |
Timeline
- Apr 7, 2026 CVE Published
=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.3256 libpng1.6 security update 7 April 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: libpng1.6 Publisher: Debian Operating System: Debian GNU/Linux Resolution: Patch/Upgrade CVE Names: CVE-2026-33416 CVE-2026-33636 Original Bulletin: https://lists.debian.org/debian-lts-announce/2026/04/msg00001.html Comment: CVSS (Max): 7.6 CVE-2026-33636 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H) CVSS Source: GitHub Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H EPSS (Max): 0.1% (15th) CVE-2026-33416 2026-04-02 - --------------------------BEGIN INCLUDED TEXT-------------------- ------------------------------------------------------------------------- Debian LTS Advisory DLA-4521-1 debian-lts@lists.debian.org https://www.debian.org/lts/security/ Tobias Frost April 02, 2026 https://wiki.debian.org/LTS ------------------------------------------------------------------------- Package : libpng1.6 Version : 1.6.37-3+deb11u3 CVE ID : CVE-2026-33416 CVE-2026-33636 Debian Bug : 1132012 1132013 Two security vulnerabilities were discovered in libpng, a library implementing an interface for reading and writing PNG (Portable Network Graphics) files, which could result in denial of service or potentially the execution of arbitrary code. CVE-2026-33416 Use-after-free via pointer aliasing in `png_set_tRNS` and `png_set_PLTE`, potentially allowing arbitrary code execution CVE-2026-33636 Out-of-bounds read/write in the palette expansion on ARM Neon, potentially causing a crash (DoS) For Debian 11 bullseye, these problems have been fixed in version 1.6.37-3+deb11u3. We recommend that you upgrade your libpng1.6 packages. For the detailed security status of libpng1.6 please refer to its security tracker page at: https://security-tracker.debian.org/tracker/libpng1.6 Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS - --------------------------END INCLUDED TEXT---------------------- You have received this e-mail bulletin as a result of your organisation's registration with AUSCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AUSCERT's members. As AUSCERT did not write the document quoted above, AUSCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AUSCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://portal.auscert.org.au/bulletins/ =========================================================================== AUSCERT The University of Queensland, Brisbane QLD 4072 Australia e: auscert@auscert.org.au t: +61 (0)7 3365 4417 Allies in Cyber Security ===========================================================================
| Vendor | Product | Versions |
|---|---|---|
| Debian | libpng1.6 |