Gen Digital
Monthly
Privilege escalation in CCleaner's Uninstaller component on Windows allows a local low-privileged attacker to gain SYSTEM-level access by planting an NTFS symlink or directory junction before or during application uninstallation. The uninstaller executes file deletion with elevated (SYSTEM) integrity and follows the attacker-controlled link without validation, redirecting destructive operations to arbitrary system paths. No public exploit or active exploitation (CISA KEV) has been identified at time of analysis; Gen Digital has released a fix in CCleaner 7.10.1464.
Cross-origin credential disclosure in Avira Password Manager's Firefox extension allows a malicious site embedding the targeted page in an iframe to harvest credentials that the extension autofills into the parent context. The flaw stems from incorrect autofill field selection and affects Windows, macOS, and Linux installations; no public exploit identified at time of analysis but the CVSS 7.4 (S:C/C:H) score reflects the cross-origin trust boundary violation.
Local code execution in Avira Antivirus engine builds prior to 8.3.27.12 on Windows, macOS, and Linux occurs when the scanner parses a malformed POSIX tar archive, triggering a heap out-of-bounds write that can either crash the AV process (DoS) or execute attacker code in the scanner's context. No public exploit identified at time of analysis, but the on-access scanning model means a victim only has to write the malicious tar to disk for the engine to touch it. Reported by GEN (Gen Digital, Avira's parent).
Local code execution in Avira Antivirus engine builds before 8.3.70.104 on Windows, macOS, and Linux allows attackers to trigger a heap buffer out-of-bounds write by having the engine scan a malformed MS-DOS executable. The flaw stems from an integer overflow during parsing and can also crash the antivirus engine process, with no public exploit identified at time of analysis.
Local code execution in Avira Antivirus engine builds before 8.3.70.76 on Windows, macOS, and Linux is triggered when the scanner processes a malformed PDF file, leading to a heap out-of-bounds read that can corrupt the antivirus engine process. CVSS 7.8 reflects the high impact on confidentiality, integrity, and availability, but exploitation requires the victim to expose the engine to the attacker's file. No public exploit identified at time of analysis.
Heap out-of-bounds read in the Avira Antivirus scanning engine on Windows, macOS, and Linux (engine builds before 8.3.70.98) allows a malformed Windows PE file to trigger local code execution or crash the antivirus engine process. Because AV engines typically auto-scan files on access, simply writing or dropping a crafted PE onto disk can reach the vulnerable parser, and no public exploit identified at time of analysis. Exploitation requires the victim's AV to scan the file (UI:R), so realistic delivery is via downloads, email attachments, or removable media rather than fully remote unauthenticated execution.
Stack overflow in Gen Digital's shared antivirus scanning engine crashes the AV process when it parses a malformed Office Open XML (OOXML) file, causing a Denial-of-Service condition. The flaw affects Avast Antivirus, AVG Antivirus, Norton Antivirus, Avast One, and Avast Business Antivirus across Windows, macOS, and Linux - all products that consume the same Gen Digital VPS (virus definition) update stream. No active exploitation or public exploit code has been identified at time of analysis; the impact is limited to availability (AV process crash) with no confidentiality or integrity consequences.
Null pointer dereference in the Avira Antivirus scanning engine crashes the antivirus process when it parses a specially crafted malformed Windows PE file. All platform deployments - Windows, macOS, and Linux - running engine builds prior to 8.3.70.64 are affected, making this a cross-platform availability risk. No public exploit identified at time of analysis and no CISA KEV listing; however, the ease of crafting a malformed PE file as a trigger lowers the practical barrier for targeted disruption of endpoint protection.
Local code execution or denial-of-service in Avira Antivirus engine builds prior to 8.3.70.56 occurs when the scanner parses a malformed Windows MSI installer file, triggering a heap out-of-bounds read. The flaw affects deployments on Windows, macOS, and Linux and requires user interaction to place a crafted MSI where the engine will scan it. No public exploit identified at time of analysis and CVSS scores it 7.8 High.
Local code execution and denial-of-service in Gen Digital antivirus engines (Avast, AVG, Norton, Avast One, Avast Business Antivirus) on Windows, macOS, and Linux stems from a heap out-of-bounds read in the malformed-ZIP/XML scanner across virus definition builds 25020100 through 25021207. An attacker who lures a user into letting the on-access scanner process a crafted archive can crash the antivirus process or potentially execute code in its context. No public exploit identified at time of analysis and the EPSS signal was not provided.
Stack overflow via uncontrolled recursion crashes the antivirus scanning process across all Gen Digital consumer and business products when a crafted malformed PDF is scanned. Avast Antivirus, AVG Antivirus, Norton Antivirus, Avast One, and Avast Business Antivirus on Windows, macOS, and Linux are all affected through a shared Gen Digital virus definition engine (VPS builds before 25021208). An attacker who can place a specially crafted PDF on a target system - or deliver it via email or download - can force a denial-of-service of the antivirus process; no public exploit has been identified at time of analysis.
Local code execution or antivirus-process denial-of-service in Gen Digital's shared scanning engine (Avast Antivirus, AVG Antivirus, Norton Antivirus, Avast One, and Avast Business Antivirus on Windows, macOS, and Linux) is triggered when the engine parses a malformed Windows PE file and performs a heap out-of-bounds read. Mitigation ships via the VPS 25021310 virus definition update rather than a product installer, so any consumer of the Gen Digital definition stream at or above that build is no longer exposed. No public exploit identified at time of analysis, but the bug sits inside a high-privilege scanner that auto-processes attacker-controlled files.
Out-of-bounds heap read in the Gen Digital antivirus scanning engine (Avast, AVG, Norton, Avast One, Avast Business) allows a malformed Windows PE file with crafted .NET metadata to crash the AV process or potentially execute code locally on Windows, macOS, and Linux endpoints running virus definitions prior to VPS 25021310. No public exploit identified at time of analysis and the issue is not on the CISA KEV list, but the bug is reachable via on-access scanning, meaning any user who receives a malicious file may trigger it without explicit action. UI:R in the CVSS vector and the local attack vector temper the urgency relative to the 7.8 base score.
Stack use-after-free in the Gen Digital shared antivirus scanning engine crashes the antivirus process when it parses a malformed Windows PE file. Five Gen Digital products share a common virus definition update stream - Avast Antivirus, AVG Antivirus, Norton Antivirus, Avast One, and Avast Business Antivirus across Windows, macOS, and Linux - making all simultaneously vulnerable until the shared definition stream reaches build VPS 25022500. No public exploit has been identified at time of analysis; the impact is limited to a Denial-of-Service of the antivirus process with no confidentiality or integrity loss, and the CVSS score of 5.5 reflects the local, user-interaction-dependent nature of the attack.
Uncontrolled recursion in the Gen Digital shared scanning engine crashes the antivirus process when it encounters a specially crafted malformed Windows PE file, causing a Denial-of-Service across five Gen Digital products - Avast Antivirus, AVG Antivirus, Norton Antivirus, Avast One, and Avast Business Antivirus - on Windows, macOS, and Linux. The vulnerability resides in the virus definition update stream rather than the product binary itself, meaning all five products sharing the same Gen Digital VPS stream are simultaneously exposed until updated to definition build VPS 25031700 or later. No public exploit code has been identified at time of analysis, and CVSS scores this at medium severity (5.5) reflecting local access and required user interaction as meaningful limiting factors.
Heap out-of-bounds write in Gen Digital's shared antivirus scanning engine allows local code execution or denial of service when the engine parses a malformed Windows PE file, affecting Avast Antivirus, AVG Antivirus, Norton Antivirus, Avast One, and Avast Business Antivirus across Windows, macOS, and Linux on virus definition builds prior to VPS 25040308. Because the flaw lives in the scanner that typically runs with elevated privileges, successful exploitation can escalate to code execution in a high-privilege security context. No public exploit identified at time of analysis and the issue is not listed in CISA KEV.
Out-of-bounds heap read in the Avira Antivirus scanning engine triggers when the engine parses a malformed PDF, allowing local code execution or denial-of-service of the antivirus process on Windows, macOS, and Linux engine builds prior to 8.3.70.56. The CVSS 7.8 (High) rating reflects local attack vector with required user interaction (the engine must scan the attacker-supplied file), and no public exploit identified at time of analysis. Because the AV engine typically runs with elevated privileges, successful code execution would inherit those privileges.
Local code execution and denial-of-service in Avira Antivirus engine builds before 8.3.70.68 allow an attacker to compromise the scanning engine by placing a malformed PDF where the engine will scan it on Windows, macOS, or Linux. The flaw is a heap out-of-bounds read (CWE-125) triggered during PDF parsing, and no public exploit identified at time of analysis. CVSS is 7.8 (high) driven by full C/I/A impact on the local host, but exploitation requires user/scanner interaction with the malicious file.
Norton Secure VPN installed via Microsoft Store allows low-privilege Windows users to escalate to SYSTEM-level privileges by replacing files during the installation process, causing arbitrary file deletion. Cisco Talos discovered this TOCTOU (Time-of-Check Time-of-Use) race condition in the installer. No public exploit code or active exploitation confirmed at time of analysis, but the local attack vector with low complexity (CVSS AC:L) makes this highly exploitable once installation details are known.
Privilege escalation in CCleaner's Uninstaller component on Windows allows a local low-privileged attacker to gain SYSTEM-level access by planting an NTFS symlink or directory junction before or during application uninstallation. The uninstaller executes file deletion with elevated (SYSTEM) integrity and follows the attacker-controlled link without validation, redirecting destructive operations to arbitrary system paths. No public exploit or active exploitation (CISA KEV) has been identified at time of analysis; Gen Digital has released a fix in CCleaner 7.10.1464.
Cross-origin credential disclosure in Avira Password Manager's Firefox extension allows a malicious site embedding the targeted page in an iframe to harvest credentials that the extension autofills into the parent context. The flaw stems from incorrect autofill field selection and affects Windows, macOS, and Linux installations; no public exploit identified at time of analysis but the CVSS 7.4 (S:C/C:H) score reflects the cross-origin trust boundary violation.
Local code execution in Avira Antivirus engine builds prior to 8.3.27.12 on Windows, macOS, and Linux occurs when the scanner parses a malformed POSIX tar archive, triggering a heap out-of-bounds write that can either crash the AV process (DoS) or execute attacker code in the scanner's context. No public exploit identified at time of analysis, but the on-access scanning model means a victim only has to write the malicious tar to disk for the engine to touch it. Reported by GEN (Gen Digital, Avira's parent).
Local code execution in Avira Antivirus engine builds before 8.3.70.104 on Windows, macOS, and Linux allows attackers to trigger a heap buffer out-of-bounds write by having the engine scan a malformed MS-DOS executable. The flaw stems from an integer overflow during parsing and can also crash the antivirus engine process, with no public exploit identified at time of analysis.
Local code execution in Avira Antivirus engine builds before 8.3.70.76 on Windows, macOS, and Linux is triggered when the scanner processes a malformed PDF file, leading to a heap out-of-bounds read that can corrupt the antivirus engine process. CVSS 7.8 reflects the high impact on confidentiality, integrity, and availability, but exploitation requires the victim to expose the engine to the attacker's file. No public exploit identified at time of analysis.
Heap out-of-bounds read in the Avira Antivirus scanning engine on Windows, macOS, and Linux (engine builds before 8.3.70.98) allows a malformed Windows PE file to trigger local code execution or crash the antivirus engine process. Because AV engines typically auto-scan files on access, simply writing or dropping a crafted PE onto disk can reach the vulnerable parser, and no public exploit identified at time of analysis. Exploitation requires the victim's AV to scan the file (UI:R), so realistic delivery is via downloads, email attachments, or removable media rather than fully remote unauthenticated execution.
Stack overflow in Gen Digital's shared antivirus scanning engine crashes the AV process when it parses a malformed Office Open XML (OOXML) file, causing a Denial-of-Service condition. The flaw affects Avast Antivirus, AVG Antivirus, Norton Antivirus, Avast One, and Avast Business Antivirus across Windows, macOS, and Linux - all products that consume the same Gen Digital VPS (virus definition) update stream. No active exploitation or public exploit code has been identified at time of analysis; the impact is limited to availability (AV process crash) with no confidentiality or integrity consequences.
Null pointer dereference in the Avira Antivirus scanning engine crashes the antivirus process when it parses a specially crafted malformed Windows PE file. All platform deployments - Windows, macOS, and Linux - running engine builds prior to 8.3.70.64 are affected, making this a cross-platform availability risk. No public exploit identified at time of analysis and no CISA KEV listing; however, the ease of crafting a malformed PE file as a trigger lowers the practical barrier for targeted disruption of endpoint protection.
Local code execution or denial-of-service in Avira Antivirus engine builds prior to 8.3.70.56 occurs when the scanner parses a malformed Windows MSI installer file, triggering a heap out-of-bounds read. The flaw affects deployments on Windows, macOS, and Linux and requires user interaction to place a crafted MSI where the engine will scan it. No public exploit identified at time of analysis and CVSS scores it 7.8 High.
Local code execution and denial-of-service in Gen Digital antivirus engines (Avast, AVG, Norton, Avast One, Avast Business Antivirus) on Windows, macOS, and Linux stems from a heap out-of-bounds read in the malformed-ZIP/XML scanner across virus definition builds 25020100 through 25021207. An attacker who lures a user into letting the on-access scanner process a crafted archive can crash the antivirus process or potentially execute code in its context. No public exploit identified at time of analysis and the EPSS signal was not provided.
Stack overflow via uncontrolled recursion crashes the antivirus scanning process across all Gen Digital consumer and business products when a crafted malformed PDF is scanned. Avast Antivirus, AVG Antivirus, Norton Antivirus, Avast One, and Avast Business Antivirus on Windows, macOS, and Linux are all affected through a shared Gen Digital virus definition engine (VPS builds before 25021208). An attacker who can place a specially crafted PDF on a target system - or deliver it via email or download - can force a denial-of-service of the antivirus process; no public exploit has been identified at time of analysis.
Local code execution or antivirus-process denial-of-service in Gen Digital's shared scanning engine (Avast Antivirus, AVG Antivirus, Norton Antivirus, Avast One, and Avast Business Antivirus on Windows, macOS, and Linux) is triggered when the engine parses a malformed Windows PE file and performs a heap out-of-bounds read. Mitigation ships via the VPS 25021310 virus definition update rather than a product installer, so any consumer of the Gen Digital definition stream at or above that build is no longer exposed. No public exploit identified at time of analysis, but the bug sits inside a high-privilege scanner that auto-processes attacker-controlled files.
Out-of-bounds heap read in the Gen Digital antivirus scanning engine (Avast, AVG, Norton, Avast One, Avast Business) allows a malformed Windows PE file with crafted .NET metadata to crash the AV process or potentially execute code locally on Windows, macOS, and Linux endpoints running virus definitions prior to VPS 25021310. No public exploit identified at time of analysis and the issue is not on the CISA KEV list, but the bug is reachable via on-access scanning, meaning any user who receives a malicious file may trigger it without explicit action. UI:R in the CVSS vector and the local attack vector temper the urgency relative to the 7.8 base score.
Stack use-after-free in the Gen Digital shared antivirus scanning engine crashes the antivirus process when it parses a malformed Windows PE file. Five Gen Digital products share a common virus definition update stream - Avast Antivirus, AVG Antivirus, Norton Antivirus, Avast One, and Avast Business Antivirus across Windows, macOS, and Linux - making all simultaneously vulnerable until the shared definition stream reaches build VPS 25022500. No public exploit has been identified at time of analysis; the impact is limited to a Denial-of-Service of the antivirus process with no confidentiality or integrity loss, and the CVSS score of 5.5 reflects the local, user-interaction-dependent nature of the attack.
Uncontrolled recursion in the Gen Digital shared scanning engine crashes the antivirus process when it encounters a specially crafted malformed Windows PE file, causing a Denial-of-Service across five Gen Digital products - Avast Antivirus, AVG Antivirus, Norton Antivirus, Avast One, and Avast Business Antivirus - on Windows, macOS, and Linux. The vulnerability resides in the virus definition update stream rather than the product binary itself, meaning all five products sharing the same Gen Digital VPS stream are simultaneously exposed until updated to definition build VPS 25031700 or later. No public exploit code has been identified at time of analysis, and CVSS scores this at medium severity (5.5) reflecting local access and required user interaction as meaningful limiting factors.
Heap out-of-bounds write in Gen Digital's shared antivirus scanning engine allows local code execution or denial of service when the engine parses a malformed Windows PE file, affecting Avast Antivirus, AVG Antivirus, Norton Antivirus, Avast One, and Avast Business Antivirus across Windows, macOS, and Linux on virus definition builds prior to VPS 25040308. Because the flaw lives in the scanner that typically runs with elevated privileges, successful exploitation can escalate to code execution in a high-privilege security context. No public exploit identified at time of analysis and the issue is not listed in CISA KEV.
Out-of-bounds heap read in the Avira Antivirus scanning engine triggers when the engine parses a malformed PDF, allowing local code execution or denial-of-service of the antivirus process on Windows, macOS, and Linux engine builds prior to 8.3.70.56. The CVSS 7.8 (High) rating reflects local attack vector with required user interaction (the engine must scan the attacker-supplied file), and no public exploit identified at time of analysis. Because the AV engine typically runs with elevated privileges, successful code execution would inherit those privileges.
Local code execution and denial-of-service in Avira Antivirus engine builds before 8.3.70.68 allow an attacker to compromise the scanning engine by placing a malformed PDF where the engine will scan it on Windows, macOS, or Linux. The flaw is a heap out-of-bounds read (CWE-125) triggered during PDF parsing, and no public exploit identified at time of analysis. CVSS is 7.8 (high) driven by full C/I/A impact on the local host, but exploitation requires user/scanner interaction with the malicious file.
Norton Secure VPN installed via Microsoft Store allows low-privilege Windows users to escalate to SYSTEM-level privileges by replacing files during the installation process, causing arbitrary file deletion. Cisco Talos discovered this TOCTOU (Time-of-Check Time-of-Use) race condition in the installer. No public exploit code or active exploitation confirmed at time of analysis, but the local attack vector with low complexity (CVSS AC:L) makes this highly exploitable once installation details are known.