CVE-2021-3003: Agenzia delle Entrate Desktop Telematico 1.0.0 contacts the jws.agenziaentrate.it server over cleartext HTTP,

Routine

MEDIUM 5.3DOWNGRADE

CVE-2021-3003 is a medium-severity flaw (CVSS 5.3) affecting desktop telematico. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Agenzia delle Entrate Desktop Telematico 1.0.0 contacts the jws.agenziaentrate.it server over cleartext HTTP, which allows man-in-the-middle attackers to spoof product updates.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.8% (top 43%)
CISA exploited list	No
Weakness	CWE-319
Published	2021-05-10
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: agenziaentrate

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-05-10 06:15 UTCPublished CVE record published
2026-06-17 04:04 UTCUpdated Record last modified

agenziaentrate desktop telematico DOWNGRADE

Affected: 1.0.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.0

1. Check installed version

apt-cache policy desktop-telematico || rpm -q desktop-telematico || desktop-telematico --version

2. No fixed release: DOWNGRADE to a release before 1.0.0 (Debian / Ubuntu)

apt-cache madison desktop-telematico sudo apt install desktop-telematico=<VERSION_BEFORE_1.0.0> sudo apt-mark hold desktop-telematico

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list desktop-telematico sudo dnf downgrade desktop-telematico-<VERSION_BEFORE_1.0.0> sudo dnf versionlock add desktop-telematico

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-3003?

desktop telematico: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-3003 being exploited?

CVE-2021-3003 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-3003 affect?

CVE-2021-3003 affects desktop telematico. Severity is medium (CVSS 5.3). Agenzia delle Entrate Desktop Telematico 1.0.0 contacts the jws.agenziaentrate.it server over cleartext HTTP, which allows man-in-the-middle attackers to spoof product updates.

How urgent is CVE-2021-3003?

Priority 38/100. Public exploit reference

References

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