CVE-2021-39553

MediumCVSS 5.5/10Last modified Jun 17, 2026

Description

An issue was discovered in swftools through 20200710. A NULL pointer dereference exists in the function grealloc() located in gmem.cc. It allows an attacker to cause Denial of Service.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-476

Affected software

No affected versions have been published.

Timeline

Published
Sep 20, 2021
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2021

CVE-2021-395545.5An issue was discovered in swftools through 20200710. A NULL pointer dereference exists in the function Lexer::Lexer() located in Lexer.cc. CVE-2021-395555.5An issue was discovered in swftools through 20200710. A NULL pointer dereference exists in the function InfoOutputDev::type3D0() located in CVE-2021-395565.5An issue was discovered in swftools through 20200710. A NULL pointer dereference exists in the function InfoOutputDev::type3D1() located in CVE-2021-395575.5An issue was discovered in swftools through 20200710. A NULL pointer dereference exists in the function copyString() located in gmem.cc. It CVE-2021-395587.8An issue was discovered in swftools through 20200710. A stack-buffer-overflow exists in the function VectorGraphicOutputDev::drawGeneralImagCVE-2021-395595.5An issue was discovered in swftools through 20200710. A NULL pointer dereference exists in the function GString::~GString() located in GStriCVE-2021-39565.3A read-only authentication bypass vulnerability was reported in the Third Quarter 2021 release of Lenovo XClarity Controller (XCC) firmware CVE-2021-395617.8An issue was discovered in swftools through 20200710. A stack-buffer-overflow exists in the function Gfx::opSetFillColorN() located in Gfx.cCVE-2021-395625.5An issue was discovered in swftools through 20200710. A NULL pointer dereference exists in the function FileStream::makeSubStream() located CVE-2021-395635.5An issue was discovered in swftools through 20200710. A NULL pointer dereference exists in the function swf_DumpActions() located in swfactiCVE-2021-395647.8An issue was discovered in swftools through 20200710. A heap-buffer-overflow exists in the function swf_DumpActions() located in swfaction.cCVE-2021-395697.8An issue was discovered in swftools through 20200710. A heap-buffer-overflow exists in the function OpAdvance() located in swfaction.c. It a
CVE-2021-39553: Medium severity, CVSS 5.5 | Vulnix