CVE-2020-8989: In the Voatz application 2020-01-01 for Android, the amount of data transmitted during a single voter's vote d

Routine

MEDIUM 5.3REMOTEDOWNGRADE

CVE-2020-8989 is a medium-severity flaw (CVSS 5.3) affecting voatz. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In the Voatz application 2020-01-01 for Android, the amount of data transmitted during a single voter's vote depends on the different lengths of the metadata across the available voting choices, which makes it easier for remote attackers to discover this voter's choice by sniffing the network. For example, a small amount of sniffed data may indicate that a vote was cast for the candidate with the least metadata. An active man-in-the-middle attack

Why this priority

Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.0% (top 36%)
CISA exploited list	No
Weakness	CWE-203
Published	2020-02-13
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: voatz

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

Am I affected?

Timeline

2020-02-13 21:15 UTCPublished CVE record published
2026-06-17 03:27 UTCUpdated Record last modified

voatz voatz DOWNGRADE

Affected: 2020-01-01

Fixed in: no fixed release known

Safe to downgrade to: a release before 2020-01-01

1. Check installed version

apt-cache policy voatz || rpm -q voatz || voatz --version

2. No fixed release: DOWNGRADE to a release before 2020-01-01 (Debian / Ubuntu)

apt-cache madison voatz sudo apt install voatz=<VERSION_BEFORE_2020-01-01> sudo apt-mark hold voatz

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

dnf --showduplicates list voatz sudo dnf downgrade voatz-<VERSION_BEFORE_2020-01-01> sudo dnf versionlock add voatz

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-2020-8989?

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

Is CVE-2020-8989 being exploited?

CVE-2020-8989 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-2020-8989 affect?

CVE-2020-8989 affects voatz. Severity is medium (CVSS 5.3). In the Voatz application 2020-01-01 for Android, the amount of data transmitted during a single voter's vote depends on the different lengths of the metadata across the available voting choices, which makes it easier for remote attackers to

How urgent is CVE-2020-8989?

Priority 39/100. Remotely exploitable, no login, no user action

Software pages

Android vulnerabilities

Related CVEs

CVE-2020-8988 MEDIUM 5.9 DOWNGRADE The Voatz application 2020-01-01 for Android allows only 100 million different PINs, which makes it easier for

References

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