CVE-2019-19413Network attack vector

Remote system crash via malformed LDAP packets

Published Jan 21, 2020 · Updated Aug 5, 2024

Integer overflow in the LDAP client in affected Huawei products allows remote attackers to crash the target system with malformed packets. The client insufficiently validates malformed LDAP packets before an undisclosed integer calculation overflows during packet processing. Network access to the target is required; successful exploitation interrupts availability by crashing the affected device, with no reported data disclosure or modification.

CVSS severity5.9
Medium
EPSS probability0.96%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer overflow in the LDAP client in affected Huawei products allows remote attackers to crash the target system with malformed packets. The client insufficiently validates malformed LDAP packets before an undisclosed integer calculation overflows during packet processing. Network access to the target is required; successful exploitation interrupts availability by crashing the affected device, with no reported data disclosure or modification.

The record

CVE
CVE-2019-19413
Published
Jan 21, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 21, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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

5.5HuaweiCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:F/RL:O/RC:C
5.9HuaweiCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

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

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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