CVE-2024-20070Network attack vector

Remote information disclosure via weak encryption negotiation

Published Jun 3, 2024 · Updated Nov 15, 2024

Information disclosure in MediaTek modem software NR15 through NR17 allows remote attackers to read information through weak encryption negotiation. The modem uses a risky cryptographic algorithm while negotiating connection establishment, leaving information exposed when the weak algorithm is selected. Exploitation requires negotiation of that algorithm; no privileges or user interaction are required, and the reported consequence is disclosure only.

CVSS severity5.1
Medium
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in MediaTek modem software NR15 through NR17 allows remote attackers to read information through weak encryption negotiation. The modem uses a risky cryptographic algorithm while negotiating connection establishment, leaving information exposed when the weak algorithm is selected. Exploitation requires negotiation of that algorithm; no privileges or user interaction are required, and the reported consequence is disclosure only.

The record

CVE
CVE-2024-20070
Published
Jun 3, 2024
Updated
Nov 15, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-327
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 3, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 15, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.1CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-327Use of a Broken or Risky Cryptographic Algorithm

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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