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CVE archive

April 2021

Browse CVE records published in April 2021, with severity, affected products, CWE, KEV, and source-backed vulnerability context.

Showing 50 of 2026 matching CVEs · Page 5 of 41.

Critical · CVSS 9.3

CVE-2021-40402: An out-of-bounds read vulnerability exists in the RS-274X aperture macro multiple outline primitives functi...

An out-of-bounds read vulnerability exists in the RS-274X aperture macro multiple outline primitives functionality of Gerbv 2.7.0 and dev (commit b5f1eacd), and Gerbv forked 2.7.1 and 2.8.0. A specially-crafted Gerber file can lead to information disclosure. An attacker can provide a malicious file to trigger this vulnerability.

Published Apr 14, 2022 · Updated Apr 15, 2025

High · CVSS 7.1

CVE-2021-40424: An out-of-bounds read vulnerability exists in the IOCTL GetProcessCommand and B_03 of Webroot Secure Anywhe...

An out-of-bounds read vulnerability exists in the IOCTL GetProcessCommand and B_03 of Webroot Secure Anywhere 21.4. A specially-crafted executable can lead to denial of service. An attacker can issue an ioctl to trigger this vulnerability. An out-of-bounds read vulnerability exists in the IOCTL GetProcessCommand and B_03 of Webroot Secure Anywhere 21.4. The GetProcessCommandLine IOCTL request could cause an out-of-bounds read in the device driver WRCore_x64. An attacker can issue an ioctl to trigger this vulnerability.

Published Apr 14, 2022 · Updated Apr 15, 2025

High · CVSS 7.1

CVE-2021-40425: An out-of-bounds read vulnerability exists in the IOCTL GetProcessCommand and B_03 of Webroot Secure Anywhe...

An out-of-bounds read vulnerability exists in the IOCTL GetProcessCommand and B_03 of Webroot Secure Anywhere 21.4. A specially-crafted executable can lead to denial of service. An attacker can issue an ioctl to trigger this vulnerability. An out-of-bounds read vulnerability exists in the IOCTL GetProcessCommand and B_03 of Webroot Secure Anywhere 21.4. An IOCTL_B03 request with specific invalid data causes a similar issue in the device driver WRCore_x64. An attacker can issue an ioctl to trigger this vulnerability.

Published Apr 14, 2022 · Updated Apr 15, 2025

Unknown · CVSS Not scored

CVE-2021-4207: A flaw was found in the QXL display device emulation in QEMU.

A flaw was found in the QXL display device emulation in QEMU. A double fetch of guest controlled values `cursor->header.width` and `cursor->header.height` can lead to the allocation of a small cursor object followed by a subsequent heap-based buffer overflow. A malicious privileged guest user could use this flaw to crash the QEMU process on the host or potentially execute arbitrary code within the context of the QEMU process.

Published Apr 29, 2022 · Updated Mar 21, 2025

Unknown · CVSS Not scored

CVE-2021-4206: A flaw was found in the QXL display device emulation in QEMU.

A flaw was found in the QXL display device emulation in QEMU. An integer overflow in the cursor_alloc() function can lead to the allocation of a small cursor object followed by a subsequent heap-based buffer overflow. This flaw allows a malicious privileged guest user to crash the QEMU process on the host or potentially execute arbitrary code within the context of the QEMU process.

Published Apr 29, 2022 · Updated Mar 21, 2025

High · CVSS 8.7

CVE-2021-25664: A vulnerability has been identified in Capital Embedded AR Classic 431-422 (All versions), Capital Embedded...

A vulnerability has been identified in Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions < V2303), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2017.02.4), Nucleus ReadyStart V4 (All versions < V4.1.0), Nucleus Source Code (All versions including affected IPv6 stack). The function that processes the Hop-by-Hop extension header in IPv6 packets and its options lacks any checks against the length field of the header, allowing attackers to put the function into an infinite loop by supplying arbitrary length values.

Published Apr 22, 2021 · Updated Mar 11, 2025

High · CVSS 8.7

CVE-2021-25663: A vulnerability has been identified in Capital Embedded AR Classic 431-422 (All versions), Capital Embedded...

A vulnerability has been identified in Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions < V2303), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2017.02.4), Nucleus ReadyStart V4 (All versions < V4.1.0), Nucleus Source Code (All versions including affected IPv6 stack). The function that processes IPv6 headers does not check the lengths of extension header options, allowing attackers to put this function into an infinite loop with crafted length values.

Published Apr 22, 2021 · Updated Mar 11, 2025

Unknown · CVSS Not scored

CVE-2021-22696: OAuth 2 authorization service vulnerable to DDos attacks

CXF supports (via JwtRequestCodeFilter) passing OAuth 2 parameters via a JWT token as opposed to query parameters (see: The OAuth 2.0 Authorization Framework: JWT Secured Authorization Request (JAR)). Instead of sending a JWT token as a "request" parameter, the spec also supports specifying a URI from which to retrieve a JWT token from via the "request_uri" parameter. CXF was not validating the "request_uri" parameter (apart from ensuring it uses "https) and was making a REST request to the parameter in the request to retrieve a token. This means that CXF was vulnerable to DDos attacks on the authorization server, as specified in section 10.4.1 of the spec. This issue affects Apache CXF versions prior to 3.4.3; Apache CXF versions prior to 3.3.10.

Published Apr 2, 2021 · Updated Feb 13, 2025

Medium · CVSS 6.5

CVE-2021-26074: Broken Authentication in Atlassian Connect Spring Boot (ACSB) from version 1.1.0 before version 2.1.3: Atla...

Broken Authentication in Atlassian Connect Spring Boot (ACSB) from version 1.1.0 before version 2.1.3: Atlassian Connect Spring Boot is a Java Spring Boot package for building Atlassian Connect apps. Authentication between Atlassian products and the Atlassian Connect Spring Boot app occurs with a server-to-server JWT or a context JWT. Atlassian Connect Spring Boot versions from version 1.1.0 before version 2.1.3 erroneously accept context JWTs in lifecycle endpoints (such as installation) where only server-to-server JWTs should be accepted, permitting an attacker to send authenticated re-installation events to an app.

Published Apr 16, 2021 · Updated Feb 12, 2025

High · CVSS 7.7

CVE-2021-26073: Broken Authentication in Atlassian Connect Express (ACE) from version 3.0.2 before version 6.6.0: Atlassian...

Broken Authentication in Atlassian Connect Express (ACE) from version 3.0.2 before version 6.6.0: Atlassian Connect Express is a Node.js package for building Atlassian Connect apps. Authentication between Atlassian products and the Atlassian Connect Express app occurs with a server-to-server JWT or a context JWT. Atlassian Connect Express versions from 3.0.2 before 6.6.0 erroneously accept context JWTs in lifecycle endpoints (such as installation) where only server-to-server JWTs should be accepted, permitting an attacker to send authenticated re-installation events to an app.

Published Apr 16, 2021 · Updated Feb 12, 2025

High · CVSS 7.8

CVE-2021-46878: An issue was discovered in Treasure Data Fluent Bit 1.7.1, erroneous parsing in flb_pack_msgpack_to_json_fo...

An issue was discovered in Treasure Data Fluent Bit 1.7.1, erroneous parsing in flb_pack_msgpack_to_json_format leads to type confusion bug that interprets whatever is on the stack as msgpack maps and arrays, leading to use-after-free. This can be used by an attacker to craft a specially craft file and trick the victim opening it using the affect software, triggering use-after-free and execute arbitrary code on the target system.

Published Apr 11, 2023 · Updated Feb 11, 2025

High · CVSS 7.8

CVE-2021-46879: An issue was discovered in Treasure Data Fluent Bit 1.7.1, a wrong variable is used to get the msgpack data...

An issue was discovered in Treasure Data Fluent Bit 1.7.1, a wrong variable is used to get the msgpack data resulting in a heap overflow in flb_msgpack_gelf_value_ext. An attacker can craft a malicious file and tick the victim to open the file with the software, triggering a heap overflow and execute arbitrary code on the target system.

Published Apr 11, 2023 · Updated Feb 11, 2025

High · CVSS 7.8

CVE-2021-0880: In PVRSRVBridgeRGXKickTA3D of the PowerVR kernel driver, a missing size check means there is a possible int...

In PVRSRVBridgeRGXKickTA3D of the PowerVR kernel driver, a missing size check means there is a possible integer overflow that could allow out-of-bounds heap access. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android SoCAndroid ID: A-270396792

Published Apr 19, 2023 · Updated Feb 6, 2025

High · CVSS 7.8

CVE-2021-0879: In PVRSRVBridgeRGXTDMSubmitTransfer of the PowerVR kernel driver, a missing size check means there is a pos...

In PVRSRVBridgeRGXTDMSubmitTransfer of the PowerVR kernel driver, a missing size check means there is a possible integer overflow that could allow out-of-bounds heap access. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android SoCAndroid ID: A-270397970

Published Apr 19, 2023 · Updated Feb 6, 2025

High · CVSS 7.8

CVE-2021-0878: In PVRSRVBridgeServerSyncGetStatus of the PowerVR kernel driver, a missing size check means there is a poss...

In PVRSRVBridgeServerSyncGetStatus of the PowerVR kernel driver, a missing size check means there is a possible integer overflow that could allow out-of-bounds heap access. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android SoCAndroid ID: A-270399153

Published Apr 19, 2023 · Updated Feb 6, 2025

Medium · CVSS 4.3

CVE-2021-30153: An issue was discovered in the VisualEditor extension in MediaWiki before 1.31.13, and 1.32.x through 1.35....

An issue was discovered in the VisualEditor extension in MediaWiki before 1.31.13, and 1.32.x through 1.35.x before 1.35.2. . When using VisualEditor to edit a MediaWiki user page belonging to an existing, but hidden, user, VisualEditor will disclose that the user exists. (It shouldn't because they are hidden.) This is related to ApiVisualEditor.

Published Apr 15, 2023 · Updated Feb 6, 2025

Medium · CVSS 6.3

CVE-2021-34337: An issue was discovered in Mailman Core before 3.3.5.

An issue was discovered in Mailman Core before 3.3.5. An attacker with access to the REST API could use timing attacks to determine the value of the configured REST API password and then make arbitrary REST API calls. The REST API is bound to localhost by default, limiting the ability for attackers to exploit this, but can optionally be made to listen on other interfaces.

Published Apr 15, 2023 · Updated Feb 6, 2025

Critical · CVSS 9.8

CVE-2021-40506: An issue was discovered in the ALU unit of the OR1200 (aka OpenRISC 1200) processor 2011-09-10 through 2015...

An issue was discovered in the ALU unit of the OR1200 (aka OpenRISC 1200) processor 2011-09-10 through 2015-11-11. The overflow flag is not being updated for the msb and mac instructions, which results in an incorrect value in the overflow flag. Any software that relies on this flag may experience corruption in execution.

Published Apr 18, 2023 · Updated Feb 6, 2025

Critical · CVSS 9.8

CVE-2021-40507: An issue was discovered in the ALU unit of the OR1200 (aka OpenRISC 1200) processor 2011-09-10 through 2015...

An issue was discovered in the ALU unit of the OR1200 (aka OpenRISC 1200) processor 2011-09-10 through 2015-11-11. The overflow flag is not being updated correctly for the subtract instruction, which results in an incorrect value in the overflow flag. Any software that relies on this flag may experience corruption in execution.

Published Apr 18, 2023 · Updated Feb 6, 2025