CVE-2023-31893: Telefnica Brasil Vivo Play (IPTV) Firmware: 2023.04.04.01.06.15 is vulnerable to Denial of Service (DoS) via D

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HIGH 7.5REMOTEMITIGATE

CVE-2023-31893 is a high-severity flaw (CVSS 7.5) affecting brasil vivo play firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Telefnica Brasil Vivo Play (IPTV) Firmware: 2023.04.04.01.06.15 is vulnerable to Denial of Service (DoS) via DNS Recursion.

Why this priority

High severity
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.9% (top 41%)
CISA exploited list	No
Weakness	CWE-674
Published	2023-06-05
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: telefonica

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

Am I affected?

Timeline

2023-06-05 21:15 UTCPublished CVE record published
2026-06-17 05:57 UTCUpdated Record last modified

telefonica brasil vivo play firmware MITIGATE

Affected: 2023.04.04.01.06.15

Fixed in: no fixed release known

Safe to downgrade to: a release before 2023.04.04.01.06.15

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2023-31893?

brasil vivo play firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-31893 being exploited?

CVE-2023-31893 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-2023-31893 affect?

CVE-2023-31893 affects brasil vivo play firmware. Severity is high (CVSS 7.5). Telefnica Brasil Vivo Play (IPTV) Firmware: 2023.04.04.01.06.15 is vulnerable to Denial of Service (DoS) via DNS Recursion.

How urgent is CVE-2023-31893?

Priority 46/100. High severity; Remotely exploitable, no login, no user action

References

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