UnratedPublic exploit

Heap-based buffer overflow in libsimaka EAP-SIM/AKA attribute processing

IdentifiersCVE-2026-35330CWE-122

CVE-2026-35330 is a vulnerability in libsimaka involving the processing of certain EAP-SIM/AKA attributes. According to the provided context, malformed or specially crafted attributes can trigger either an infinite loop or a heap-based buffer overflow during parsing or handling of EAP-SIM/AKA data. The heap corruption condition may potentially lead to remote code execution. Specific vulnerable functions, affected versions, and patch details are not available in the provided content.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation may cause denial of service via an infinite loop and may also enable memory corruption through a heap-based buffer overflow. In the more severe case, the provided context indicates the vulnerability could potentially be leveraged for remote code execution.

Mitigation

If you can’t patch tonight, do this now.

Until vendor remediation information is available, limit exposure of systems or services that process untrusted EAP-SIM/AKA messages through libsimaka, restrict access to trusted peers where possible, and monitor for crashes or hangs associated with malformed authentication traffic. Additional mitigation guidance is currently not available in the provided content.

PUBLIC EXPLOITS

Exploits

1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos (1 hidden).

VALID 1 / 2 TOTALView more in app

CVE-2026-35330MaturityPoCVerified exploit

Small repository containing a single live C proof-of-concept exploit (`poc.c`), a README, and a GPL license. The PoC targets CVE-2026-35330 in strongSwan's EAP-SIM/AKA attribute parser. It is not a remote exploit harness by itself; instead, it locally links against installed `libsimaka.so` and `libstrongswan.so` and directly exercises the public API `simaka_message_create_from_payload()` followed by `msg->parse(msg)`. The crafted payload is a minimal 12-byte EAP-SIM message with an `AT_RAND` TLV whose length field is zero. This causes `hdr->length * 4 - 4` to underflow in `parse_attributes()`, leading to malformed allocation/copy behavior in `add_attribute()` and a heap buffer overflow/crash on vulnerable versions. The repository is clearly a PoC rather than a weaponized exploit: there is no shellcode, persistence, command execution, or post-exploitation logic. Its main capability is vulnerability triggering and crash demonstration, useful for validation and defensive testing. Although the underlying bug is pre-auth and reachable from network-delivered EAP-SIM/AKA traffic in real deployments, the included code demonstrates it through local library invocation rather than sending packets to a live endpoint.

JohannesLksDisclosed May 14, 2026cmarkdownlocalnetwork

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType

StrongswanStrongswanapplication

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ACTIVITY FEED

Recent activity

4 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.

4 SOURCESView more in app

No news coverage yet. Advisories and community discussion only.

What this page doesn’t show

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Exposure mapping

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Threat actor evidence

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Associated malware

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Detection signatures

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Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity3