Monthly
Memory corruption in Google Android 16, Android 16-qpr2, and Android 17 lets an attacker who already has low-privilege code executing on the device - for example a malicious or compromised installed app - turn uninitialized-memory handling into an out-of-bounds write and escalate to full privileges with no further execution privileges and no user interaction. The weakness is rated CVSS 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), which requires a pre-existing local foothold rather than a purely network-reachable entry point, and exploitation is only possible on builds that have not applied the 2026-10-01 Android security patch. There is no public exploit identified at time of analysis, CISA's SSVC assessment records Exploitation: none and Automatable: no, so this is a high-priority patch item rather than an emergency, and it is not listed in CISA KEV.
Uninitialized memory handling in Mozilla Firefox's Storage Quota Manager can leak contents of the browser's process memory to a remote attacker who persuades a victim to load attacker-controlled web content, affecting Firefox releases before 157 as well as ESR builds before 153.4, 140.17, and 115.42. The required user interaction (UI:R) is the main limiting factor, and no privileges are needed (PR:N); the independently assessed impact is confidentiality disclosure only, with no code execution or availability effect established, and triage should not treat the published I:H/A:N components of the 8.1 CVSS score as realized. No public exploit code has been identified at time of analysis and EPSS is low at 0.16% (4th percentile), with vendor-supplied fixes already available in Firefox 157 and the three ESR branches.
FreeRDP clients prior to 3.31.0 leak uninitialized heap memory through the urbdrc USB-redirection channel when a malicious RDP server forces USB transfers to fail, handing the attacker reliable client-side memory contents. The disclosure is a high-severity confidentiality weakness (CWE-457) that defeats ASLR and becomes remote code execution only when chained with a separate memory-corruption flaw in the client. Publicly available exploit code exists per CISA's SSVC assessment (Exploitation: poc), and SSVC rates technical impact as partial and automatable as no, meaning exploitation is feasible but requires an attacker-controlled RDP server plus a victim who initiates the connection.
Privilege escalation in Mozilla Firefox affects all builds prior to Firefox 156 and Firefox ESR 153.3, stemming from use of uninitialized memory inside the Graphics: CanvasWebGL component. A remote attacker who gets a victim to render crafted WebGL canvas content can corrupt memory in the graphics path and potentially escalate privileges or execute arbitrary code in the browser's context — the CVSS vector confirms no authentication is required (PR:N) but user interaction is (UI:R). No public exploit code has been identified at time of analysis and the CVE is not listed in CISA KEV; Mozilla shipped fixes in Firefox 156 and Firefox ESR 153.3 per advisories MFSA2026-90 and MFSA2026-93.
Use of uninitialized memory in Mozilla Thunderbird's MIME parser allows a remote attacker who sends a specially crafted email to trigger an error condition in certain MIME bodies, causing the client to read uninitialized memory. Depending on what previously occupied that memory, this can leak sensitive process data or crash the application. The flaw was fixed in Thunderbird 155, 140.15 ESR, and 153.2; no public exploit has been identified and EPSS exploitation probability is low (0.15%, 4th percentile).
Sandbox-escaping remote code execution in Google Chrome for iOS (versions prior to 152.0.7977.65) stems from use of an uninitialized variable that a remote attacker can trigger with a crafted HTML page, potentially running arbitrary code outside the renderer sandbox. Rated Critical by Chromium with a CVSS 9.6 (scope-changed) vector, it requires the victim to visit a malicious page but no authentication. There is no public exploit identified and it is not on CISA KEV; EPSS is low at 0.41% (34th percentile).
Denial of service in the Wireshark ESS protocol dissector affects versions 4.6.0-4.6.7 and 4.4.0-4.4.17, allowing a remote unauthenticated attacker to crash Wireshark by injecting crafted packets into a network segment under active capture. The root cause is CWE-457 (use of an uninitialized variable) in the ESS dissector, which triggers an unhandled crash on malformed ESS traffic. No CISA KEV listing or public exploit has been identified; an EPSS score of 0.25% (16th percentile) and SSVC exploitation status of 'none' collectively indicate low real-world exploitation likelihood despite the high CVSS base score.
Remote code execution in Google Chrome's V8 JavaScript engine (versions prior to 150.0.7871.115) lets a remote, unauthenticated attacker run arbitrary code inside the renderer sandbox when a victim opens a crafted HTML page. Rated High by Chromium and CVSS 8.8, the flaw stems from use of uninitialized memory (CWE-457). No public exploit is identified at time of analysis, CISA SSVC records exploitation status as none, and EPSS is low at 0.24%.
Arbitrary code execution within the renderer sandbox in Google Chrome's V8 JavaScript engine (versions prior to 150.0.7871.46) can be triggered when a victim loads a crafted HTML page. The flaw stems from use of uninitialized memory in V8 and, while carrying a high CVSS base score of 9.6, was rated only Low severity by Chromium because code execution is confined inside the renderer sandbox and still requires a separate sandbox escape for full host compromise. No public exploit identified at time of analysis, and CISA's SSVC framework marks exploitation status as none.
Sandbox escape in Google Chrome's ANGLE graphics layer (versions prior to 150.0.7871.46) lets a remote attacker who has already compromised the renderer process break out of the browser sandbox via a crafted HTML page. The flaw is an uninitialized-memory use (CWE-457) in ANGLE, reported by Google's own Chrome team and fixed in the June 2026 Stable channel update. No public exploit is identified at time of analysis, and CISA's SSVC framework records exploitation status as none, but the total technical impact and sandbox-escape nature make it a high-priority browser patch.
Memory corruption in Google Android 16, Android 16-qpr2, and Android 17 lets an attacker who already has low-privilege code executing on the device - for example a malicious or compromised installed app - turn uninitialized-memory handling into an out-of-bounds write and escalate to full privileges with no further execution privileges and no user interaction. The weakness is rated CVSS 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), which requires a pre-existing local foothold rather than a purely network-reachable entry point, and exploitation is only possible on builds that have not applied the 2026-10-01 Android security patch. There is no public exploit identified at time of analysis, CISA's SSVC assessment records Exploitation: none and Automatable: no, so this is a high-priority patch item rather than an emergency, and it is not listed in CISA KEV.
Uninitialized memory handling in Mozilla Firefox's Storage Quota Manager can leak contents of the browser's process memory to a remote attacker who persuades a victim to load attacker-controlled web content, affecting Firefox releases before 157 as well as ESR builds before 153.4, 140.17, and 115.42. The required user interaction (UI:R) is the main limiting factor, and no privileges are needed (PR:N); the independently assessed impact is confidentiality disclosure only, with no code execution or availability effect established, and triage should not treat the published I:H/A:N components of the 8.1 CVSS score as realized. No public exploit code has been identified at time of analysis and EPSS is low at 0.16% (4th percentile), with vendor-supplied fixes already available in Firefox 157 and the three ESR branches.
FreeRDP clients prior to 3.31.0 leak uninitialized heap memory through the urbdrc USB-redirection channel when a malicious RDP server forces USB transfers to fail, handing the attacker reliable client-side memory contents. The disclosure is a high-severity confidentiality weakness (CWE-457) that defeats ASLR and becomes remote code execution only when chained with a separate memory-corruption flaw in the client. Publicly available exploit code exists per CISA's SSVC assessment (Exploitation: poc), and SSVC rates technical impact as partial and automatable as no, meaning exploitation is feasible but requires an attacker-controlled RDP server plus a victim who initiates the connection.
Privilege escalation in Mozilla Firefox affects all builds prior to Firefox 156 and Firefox ESR 153.3, stemming from use of uninitialized memory inside the Graphics: CanvasWebGL component. A remote attacker who gets a victim to render crafted WebGL canvas content can corrupt memory in the graphics path and potentially escalate privileges or execute arbitrary code in the browser's context — the CVSS vector confirms no authentication is required (PR:N) but user interaction is (UI:R). No public exploit code has been identified at time of analysis and the CVE is not listed in CISA KEV; Mozilla shipped fixes in Firefox 156 and Firefox ESR 153.3 per advisories MFSA2026-90 and MFSA2026-93.
Use of uninitialized memory in Mozilla Thunderbird's MIME parser allows a remote attacker who sends a specially crafted email to trigger an error condition in certain MIME bodies, causing the client to read uninitialized memory. Depending on what previously occupied that memory, this can leak sensitive process data or crash the application. The flaw was fixed in Thunderbird 155, 140.15 ESR, and 153.2; no public exploit has been identified and EPSS exploitation probability is low (0.15%, 4th percentile).
Sandbox-escaping remote code execution in Google Chrome for iOS (versions prior to 152.0.7977.65) stems from use of an uninitialized variable that a remote attacker can trigger with a crafted HTML page, potentially running arbitrary code outside the renderer sandbox. Rated Critical by Chromium with a CVSS 9.6 (scope-changed) vector, it requires the victim to visit a malicious page but no authentication. There is no public exploit identified and it is not on CISA KEV; EPSS is low at 0.41% (34th percentile).
Denial of service in the Wireshark ESS protocol dissector affects versions 4.6.0-4.6.7 and 4.4.0-4.4.17, allowing a remote unauthenticated attacker to crash Wireshark by injecting crafted packets into a network segment under active capture. The root cause is CWE-457 (use of an uninitialized variable) in the ESS dissector, which triggers an unhandled crash on malformed ESS traffic. No CISA KEV listing or public exploit has been identified; an EPSS score of 0.25% (16th percentile) and SSVC exploitation status of 'none' collectively indicate low real-world exploitation likelihood despite the high CVSS base score.
Remote code execution in Google Chrome's V8 JavaScript engine (versions prior to 150.0.7871.115) lets a remote, unauthenticated attacker run arbitrary code inside the renderer sandbox when a victim opens a crafted HTML page. Rated High by Chromium and CVSS 8.8, the flaw stems from use of uninitialized memory (CWE-457). No public exploit is identified at time of analysis, CISA SSVC records exploitation status as none, and EPSS is low at 0.24%.
Arbitrary code execution within the renderer sandbox in Google Chrome's V8 JavaScript engine (versions prior to 150.0.7871.46) can be triggered when a victim loads a crafted HTML page. The flaw stems from use of uninitialized memory in V8 and, while carrying a high CVSS base score of 9.6, was rated only Low severity by Chromium because code execution is confined inside the renderer sandbox and still requires a separate sandbox escape for full host compromise. No public exploit identified at time of analysis, and CISA's SSVC framework marks exploitation status as none.
Sandbox escape in Google Chrome's ANGLE graphics layer (versions prior to 150.0.7871.46) lets a remote attacker who has already compromised the renderer process break out of the browser sandbox via a crafted HTML page. The flaw is an uninitialized-memory use (CWE-457) in ANGLE, reported by Google's own Chrome team and fixed in the June 2026 Stable channel update. No public exploit is identified at time of analysis, and CISA's SSVC framework records exploitation status as none, but the total technical impact and sandbox-escape nature make it a high-priority browser patch.