CVE-2026-33812 | x-image font sfnt up to 0.38.x Font File Parser memory allocation

VDB-358595 · CVE-2026-33812 · GCVE-0-2026-33812 X-IMAGE FONT SFNT UP TO 0.38.X FONT FILE PARSER MEMORY ALLOCATION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.1 $0-$5k 2.55+ Summaryinfo A vulnerability classified as problematic has been found in x-image font sfnt up to 0.38.x. The affected element is an unknown function of the component Font File Parser. The manipulation leads to memory allocation. This vulnerability is referenced as CVE-2026-33812. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component. Detailsinfo A vulnerability was found in x-image font sfnt up to 0.38.x. It has been rated as problematic. This issue affects some unknown processing of the component Font File Parser. The manipulation with an unknown input leads to a memory allocation vulnerability. Using CWE to declare the problem leads to CWE-789. The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated. Impacted is availability. The summary by CVE is: Parsing a malicious font file can cause excessive memory allocation. The identification of this vulnerability is CVE-2026-33812 since 03/23/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. Upgrading to version 0.39.0 eliminates this vulnerability. Productinfo Name x-image font sfnt Version 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0.10 0.11 0.12 0.13 0.14 0.15 0.16 0.17 0.18 0.19 0.20 0.21 0.22 0.23 0.24 0.25 0.26 0.27 0.28 0.29 0.30 0.31 0.32 0.33 0.34 0.35 0.36 0.37 0.38 CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 5.3 VulDB Meta Temp Score: 5.1 VulDB Base Score: 5.3 VulDB Temp Score: 5.1 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Memory allocation CWE: CWE-789 / CWE-400 / CWE-404 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: x-image font sfnt 0.39.0 Timelineinfo 03/23/2026 CVE reserved 04/21/2026 +28 days Advisory disclosed 04/21/2026 +0 days VulDB entry created 04/21/2026 +0 days VulDB entry last update Sourcesinfo Status: Confirmed CVE: CVE-2026-33812 (🔒) GCVE (CVE): GCVE-0-2026-33812 GCVE (VulDB): GCVE-100-358595 Entryinfo Created: 04/21/2026 22:38 Changes: 04/21/2026 22:38 (52) Complete: 🔍 Cache ID: 99:F1B:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸