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CWE-244

Improper Clearing of Heap Memory Before Release ('Heap Inspection')

18 CVEs Avg CVSS 6.6 MITRE
0
CRITICAL
6
HIGH
12
MEDIUM
0
LOW
6
POC
1
KEV

Monthly

Threat Model
CVE-2026-20349 Aug 11, 17:17 HIGH POC KEV THREAT NEWS Act Now

Denial of service via crafted HTTP requests to the Remote Access SSL VPN service affects Cisco Secure Firewall ASA and FTD Software across a broad range of versions, enabling unauthenticated remote attackers to force an unexpected device reload and take down the firewall entirely. The Changed scope (S:C) in the CVSS vector reflects that the impact extends beyond the VPN process itself to the entire device, disrupting all traffic passing through it. This vulnerability is confirmed actively exploited (CISA KEV), with SSVC marking it as automatable, making it a high-priority remediation target for any organization with internet-exposed ASA or FTD VPN endpoints.

Denial Of Service Cisco Adaptive Security Appliance Software Secure Firewall Threat Defense
NVD VulDB
CVSS 3.1
8.6
EPSS
1.0%
Threat
4.7
CVE-2026-48025 Jun 10, 18:34 Go MEDIUM PATCH GHSA This Month

Decrypted CA private keys in nebula-mesh linger in Go's process heap after signing operations complete, violating the keystore package's explicit zeroise contract. All versions through v0.3.6 are affected across three call sites - enroll.go:116, updates.go:297, and mobile_bundle.go:40 - each of which constructs a CAManager with a plaintext ed25519.PrivateKey and drops the reference without wiping the underlying slice. An attacker with local memory-read access can extract the plaintext CA private key from process heap, defeating the master-key envelope-encryption design's core security guarantee. No public exploit has been identified at time of analysis and the vulnerability is not listed in CISA KEV.

Information Disclosure Suse
NVD GitHub
CVSS 4.0
6.9
EPSS
0.0%
CVE-2025-70873 Mar 12, 19:16 HIGH POC PATCH This Week

SQLite's zipfile extension contains a bug in the zipfileInflate function that leaks heap memory contents when processing specially crafted ZIP files. This affects SQLite version 3.51.1 and earlier installations that use the zipfile extension. An attacker can exploit this by providing a malicious ZIP file to read sensitive data from the application's memory, potentially exposing passwords, encryption keys, or other confidential information.

Information Disclosure Sqlite
NVD GitHub VulDB
CVSS 3.1
7.5
EPSS
0.0%
CVE-2026-20039 Mar 04, 18:16 HIGH This Week

Unauthenticated remote attackers can trigger a denial of service against Cisco Secure Firewall ASA and FTD devices by sending crafted HTTP requests to the VPN web server, exploiting ineffective memory management to force device reloads. The vulnerability requires no authentication or user interaction and affects all network-exposed instances. No patch is currently available.

Cisco Denial Of Service Adaptive Security Appliance Software Firepower Threat Defense Software
NVD VulDB
CVSS 3.1
8.6
EPSS
0.2%
CVE-2025-33101 Feb 17, 20:22 MEDIUM This Month

Concert versions up to 2.1.0 contains a vulnerability that allows attackers to obtain sensitive information using man in the middle techniques due to improper (CVSS 5.9).

IBM Concert
NVD
CVSS 3.1
5.9
EPSS
0.0%
CVE-2025-1722 Jan 20, 15:16 MEDIUM This Month

Concert versions up to 2.1.0 contains a vulnerability that allows attackers to a remote attacker to obtain sensitive information from allocated memory due to i (CVSS 5.9).

IBM Concert
NVD
CVSS 3.1
5.9
EPSS
0.1%
CVE-2025-1719 Jan 20, 15:16 MEDIUM This Month

Concert versions up to 2.1.0 contains a vulnerability that allows attackers to a remote attacker to obtain sensitive information from allocated memory due to i (CVSS 5.9).

IBM Concert
NVD
CVSS 3.1
5.9
EPSS
0.1%
CVE-2025-36118 Nov 17, 21:15 HIGH This Month

IBM Storage Virtualize 8.4, 8.5, 8.7, and 9.1 IKEv1 implementation allows remote attackers to obtain sensitive information from device memory via a Security Association (SA) negotiation request. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Information Disclosure IBM Storage Virtualize
NVD
CVSS 3.1
7.5
EPSS
0.1%
CVE-2025-45663 Nov 03, 15:15 MEDIUM POC This Week

An issue in NetSurf v3.11 causes the application to read uninitialized heap memory when creating a dom_event structure. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Information Disclosure Netsurf
NVD GitHub
CVSS 3.1
6.5
EPSS
0.1%
CVE-2025-1759 Aug 18, 14:15 MEDIUM This Month

IBM Concert Software 1.0.0 through 1.1.0 could allow a remote attacker to obtain sensitive information from allocated memory due to improper clearing of heap memory. Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.

IBM Information Disclosure Concert
NVD
CVSS 3.1
5.9
EPSS
0.0%
Threat Model
EPSS 1% 4.7 CVSS 8.6
HIGH POC KEV THREAT Act Now

Denial of service via crafted HTTP requests to the Remote Access SSL VPN service affects Cisco Secure Firewall ASA and FTD Software across a broad range of versions, enabling unauthenticated remote attackers to force an unexpected device reload and take down the firewall entirely. The Changed scope (S:C) in the CVSS vector reflects that the impact extends beyond the VPN process itself to the entire device, disrupting all traffic passing through it. This vulnerability is confirmed actively exploited (CISA KEV), with SSVC marking it as automatable, making it a high-priority remediation target for any organization with internet-exposed ASA or FTD VPN endpoints.

Denial Of Service Cisco Adaptive Security Appliance Software +1
NVD VulDB
EPSS 0% CVSS 6.9
MEDIUM PATCH This Month

Decrypted CA private keys in nebula-mesh linger in Go's process heap after signing operations complete, violating the keystore package's explicit zeroise contract. All versions through v0.3.6 are affected across three call sites - enroll.go:116, updates.go:297, and mobile_bundle.go:40 - each of which constructs a CAManager with a plaintext ed25519.PrivateKey and drops the reference without wiping the underlying slice. An attacker with local memory-read access can extract the plaintext CA private key from process heap, defeating the master-key envelope-encryption design's core security guarantee. No public exploit has been identified at time of analysis and the vulnerability is not listed in CISA KEV.

Information Disclosure Suse
NVD GitHub
EPSS 0% CVSS 7.5
HIGH POC PATCH This Week

SQLite's zipfile extension contains a bug in the zipfileInflate function that leaks heap memory contents when processing specially crafted ZIP files. This affects SQLite version 3.51.1 and earlier installations that use the zipfile extension. An attacker can exploit this by providing a malicious ZIP file to read sensitive data from the application's memory, potentially exposing passwords, encryption keys, or other confidential information.

Information Disclosure Sqlite
NVD GitHub VulDB
EPSS 0% CVSS 8.6
HIGH This Week

Unauthenticated remote attackers can trigger a denial of service against Cisco Secure Firewall ASA and FTD devices by sending crafted HTTP requests to the VPN web server, exploiting ineffective memory management to force device reloads. The vulnerability requires no authentication or user interaction and affects all network-exposed instances. No patch is currently available.

Cisco Denial Of Service Adaptive Security Appliance Software +1
NVD VulDB
EPSS 0% CVSS 5.9
MEDIUM This Month

Concert versions up to 2.1.0 contains a vulnerability that allows attackers to obtain sensitive information using man in the middle techniques due to improper (CVSS 5.9).

IBM Concert
NVD
EPSS 0% CVSS 5.9
MEDIUM This Month

Concert versions up to 2.1.0 contains a vulnerability that allows attackers to a remote attacker to obtain sensitive information from allocated memory due to i (CVSS 5.9).

IBM Concert
NVD
EPSS 0% CVSS 5.9
MEDIUM This Month

Concert versions up to 2.1.0 contains a vulnerability that allows attackers to a remote attacker to obtain sensitive information from allocated memory due to i (CVSS 5.9).

IBM Concert
NVD
EPSS 0% CVSS 7.5
HIGH This Month

IBM Storage Virtualize 8.4, 8.5, 8.7, and 9.1 IKEv1 implementation allows remote attackers to obtain sensitive information from device memory via a Security Association (SA) negotiation request. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Information Disclosure IBM Storage Virtualize
NVD
EPSS 0% CVSS 6.5
MEDIUM POC This Week

An issue in NetSurf v3.11 causes the application to read uninitialized heap memory when creating a dom_event structure. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Information Disclosure Netsurf
NVD GitHub
EPSS 0% CVSS 5.9
MEDIUM This Month

IBM Concert Software 1.0.0 through 1.1.0 could allow a remote attacker to obtain sensitive information from allocated memory due to improper clearing of heap memory. Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.

IBM Information Disclosure Concert
NVD

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