Is CVE-2026-48497 actively exploited?

No active exploitation of CVE-2026-48497 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-48497 be exploited remotely?

Yes. CVE-2026-48497 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-48497?

CVE-2026-48497 has a CVSS score of 7.5 (HIGH).

HOME VULNERABILITIESCVE-2026-48497

HIGH

CVE-2026-48497

CWE-480Published: June 26, 2026· Updated: Jun 29, 2026

7.5

CVSS v3.1

EPSS:0.37%probability of exploitation in 30 daysPercentile:28.5th

Official Description

Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.35.11, 1.36.7, 1.37.3, and 1.38.1, in cases where UDP DNS filter is configured with local resolution containing a name with the length of 255 octets or remote resolution for a name of 255 octets long can complete successfully, a query with such name will result in abnormal process termination. The abnormal process termination is triggered by an invalid runtime precondition that the query name is strictly less than 255 octets, contradicting DNS specification rfc1035#section-2.3.4 that the name can be 255 or less octets. This vulnerability is fixed in 1.35.11, 1.36.7, 1.37.3, and 1.38.1.

NVD Source

Technical Analysis

CVE-2026-48497 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.