CVE-2021-3003Public exploitNetwork attack vector

Code execution via cleartext update retrieval

Published May 10, 2021 · Updated Aug 3, 2024

Cleartext update retrieval in Agenzia delle Entrate Desktop Telematico 1.0.0 allows man-in-the-middle attackers to execute code. The Eclipse p2 updater fetches metadata over HTTP, accepts a replacement binary archive without an independent hash check, and unzips it into the installation directory. An attacker must control the update traffic and wait for a user to open the application and let its automatic update finish; the injected binary then runs in the user's context.

CVSS severity5.3
Medium
EPSS probability0.80%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext update retrieval in Agenzia delle Entrate Desktop Telematico 1.0.0 allows man-in-the-middle attackers to execute code. The Eclipse p2 updater fetches metadata over HTTP, accepts a replacement binary archive without an independent hash check, and unzips it into the installation directory. An attacker must control the update traffic and wait for a user to open the application and let its automatic update finish; the injected binary then runs in the user's context.

The record

CVE
CVE-2021-3003
Published
May 10, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-319, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 10, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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

5.3NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
4.3NVDAV:N/AC:M/Au:N/C:P/I:N/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 exploitPublished

Weakness, pattern, technique

CWE-319Cleartext Transmission of Sensitive Information
T1557Adversary-in-the-Middle

Public exploit references

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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