CVE-2024-24455
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedAn invalid memory access when handling a UE Context Release message containing an invalid UE identifier in Athonet vEPC MME v11.4.0 allows attackers to cause a Denial of Service (DoS) to the cellular network by repeatedly initiating connections and sending a crafted payload.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceThe Athonet vEPC MME v11.4.0 fails to properly validate UE identifiers in UE Context Release messages, leading to invalid memory access when processing crafted payloads with invalid identifiers. Attackers can repeatedly initiate connections and send specially crafted messages to trigger the memory error, causing a denial of service in the cellular network.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- High
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Confirm Athonet vEPC MME versionCheck the installed version of the Athonet vEPC MME software (typically via command line: show version, or check in the management interface under System > About)Affected if Version is 11.4.0 exactly or falls within the v11.4.x release line without patches applied
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Verify UE Context Release handling is enabledCheck the MME configuration for UE Context Release message processing (look for UE_CONTEXT_RELEASE feature flags or S1AP association settings in the MME config files or management console)Affected if UE Context Release message handling is active and exposed to S1 interface traffic
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Inspect logs for memory access errors during UE Context ReleaseSearch MME application and system logs for errors containing terms like 'invalid memory access', 'segfault', 'core dump', 'UE identifier', or 'UE Context Release' occurring togetherAffected if Logs show memory access violations or crashes occurring during UE Context Release message processing with invalid UE identifiers
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Detect abnormal connection initiation patternsReview connection logs, S1AP association logs, or network flow data for unusually high volumes of connection initiations from any single source or pattern of rapid UE attach/detach cyclesAffected if High frequency of connection initiations or UE attach/detach sequences that could indicate repeated exploitation attempts
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Check for malformed UE identifier patterns in logsExamine logs for rejected or malformed UE identifiers (S-TMSI, IMSI, or M-TMSI) appearing in UE Context Release messages, particularly values that are null, out of bounds, or unexpectedAffected if Logs show rejection or processing failures of UE Context Release messages containing invalid UE identifiers
A defender is affected if they are running Athonet vEPC MME v11.4.0 (or unpatched v11.4.x) with UE Context Release handling enabled and either observe memory access errors in logs related to UE Context Release processing or detect abnormal connection patterns indicating exploitation attempts.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataImplement strict validation of UE identifiers in UE Context Release message handling, including bounds checking and null/invalid identifier rejection, along with rate limiting on connection initiation to mitigate repeated attacks.
- Consultation6.0 h
- Implementation12.0 h
- Testing10.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $8,928.
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Free · runs locallyCheck whether your project pulls in CVE-2024-24455 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2024-24455 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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