Is CVE-2026-45684 in the CISA KEV catalog?

No. CVE-2026-45684 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-45684?

CVE-2026-45684 has a CVSS v3 base score of 4.9 (MEDIUM).

What is the EPSS score for CVE-2026-45684?

CVE-2026-45684 has an EPSS score of 0.17% (7th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-45684?

Upgrade ebpf instrumentation to 0.9.0 or later.

CVE & CISA-KEV Catalog

CVE-2026-45684

MEDIUM

4.9

CVSS v3

NVD

Description

OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard. From version 0.7.0 to before version 0.9.0, OBI's log enricher mishandles writev buffers by reading only the first iovec entry but using the total iov_iter.count as the copy length. When log injection is enabled, a crafted multi-segment writev call can make OBI read and overwrite memory beyond the first segment. This issue has been patched in version 0.9.0.

CWE-126Buffer Over-read CWE-787Out-of-bounds Write

How to fix

Remediation Available

ebpf instrumentationNVD

Affected:>= 0.7.0, < 0.9.0Fixed in:0.9.0CVE-2026-45684derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityLow

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Exploit Intelligence

0.17%probability of exploitation in 30 days

7thpercentile

Low risk: more likely to be exploited than 7% of all known CVEs.

References

Exploit1

github.com

Release Notes1

github.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-03.