CVE-2019-17561Network attack vector

Code execution via incomplete NBM signature validation

Published Mar 30, 2020 · Updated Aug 5, 2024

Improper signature verification in Apache NetBeans 11.2 and earlier allows remote attackers to execute added code through a modified NBM. The autoupdate system accepts a downloaded NBM without fully validating its code signature, so injected code retains the package's apparent trust. Reaching the flaw requires an update or plugin download from attacker-controlled content; execution affects the IDE user's account and integrity.

CVSS severity7.5
High
EPSS probability1.68%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper signature verification in Apache NetBeans 11.2 and earlier allows remote attackers to execute added code through a modified NBM. The autoupdate system accepts a downloaded NBM without fully validating its code signature, so injected code retains the package's apparent trust. Reaching the flaw requires an update or plugin download from attacker-controlled content; execution affects the IDE user's account and integrity.

The record

CVE
CVE-2019-17561
Published
Mar 30, 2020
Updated
Aug 5, 2024
Vendor
Apache Software Foundation
Product
Apache NetBeans
Classifications
CWE-347, T1553
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 30, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=through 11.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Apache Software Foundation · Apache NetBeansversion=through 11.2

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
5.0NIST NVDAV:N/AC:L/Au:N/C:N/I:P/A:N

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-347Improper Verification of Cryptographic Signature
T1553Subvert Trust Controls

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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