CVE-2026-45584
published 2026-05-20CVE-2026-45584: Heap-based buffer overflow in Microsoft Defender allows an unauthorized attacker to execute code over a network.
PriorityP354high8.1CVSS 3.1
AVNACHPRNUINSUCHIHAH
EPSS
0.85%
54.5th percentile
Heap-based buffer overflow in Microsoft Defender allows an unauthorized attacker to execute code over a network.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | malware_protection_engine | >= 1.1.26030.3008 < 1.1.26040.8 | 1.1.26040.8 |
| microsoft | microsoft_malware_protection_engine | >= 1.1.0.0 < 1.1.26040.8 | 1.1.26040.8 |
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
GHSA
CiliumLocalRedirectPolicy addressMatcher allows cross-namespace service traffic hijacking and can break service translation
ghsa·2026-07-06
CVE-2026-53935 [MEDIUM] CWE-601 CiliumLocalRedirectPolicy addressMatcher allows cross-namespace service traffic hijacking and can break service translation
CiliumLocalRedirectPolicy addressMatcher allows cross-namespace service traffic hijacking and can break service translation
### Impact
Users with the ability to create CiliumLocalRedirectPolicies can specify arbitrary ClusterIPs via addressMatcher, which enables hijacking traffic to Services in any namespace, bypassing the namespace-scoping guarantees enforced by serviceMatcher.
In addition, deleting such a policy can corrupt Cilium's internal service state, causing service translation to stop working entirely for the affected Service.
### Patches
This issue affects:
- Cilium v1.19.0 to v1.19.3 inclusive (fixed in PR #45584)
- Cilium v1.18.2 to v1.18.9 inclusive (fixed in PR #45585)
- All versions of Cilium prior to v1.17.16 (fixed in PR #45412)
This issue has been patched in:
- Ci
VulDB
Microsoft Malware Protection Engine heap-based overflow
vuldb·2026-05-20·CVSS 8.1
CVE-2026-45584 [HIGH] Microsoft Malware Protection Engine heap-based overflow
A vulnerability identified as critical has been detected in Microsoft Malware Protection Engine. The impacted element is an unknown function. The manipulation leads to heap-based buffer overflow.
This vulnerability is uniquely identified as CVE-2026-45584. The attack is possible to be carried out remotely. No exploit exists.
GHSA
GHSA-f7rp-9ghh-f4gm: Heap-based buffer overflow in Microsoft Defender allows an unauthorized attacker to execute code over a network
ghsa_unreviewed·2026-05-20
CVE-2026-45584 [HIGH] CWE-122 GHSA-f7rp-9ghh-f4gm: Heap-based buffer overflow in Microsoft Defender allows an unauthorized attacker to execute code over a network
Heap-based buffer overflow in Microsoft Defender allows an unauthorized attacker to execute code over a network.
No detection rules found.
No public exploits indexed.
2026-05-20
Published