How severe is CVE-2026-16243?

CVE-2026-16243 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-16243 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-16243?

CVE-2026-16243 affects Eclipse Omr. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-16243?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2026-16243 published?

CVE-2026-16243 was published on 2026-07-21 and last updated on 2026-08-11.

CVE-2026-16243

CVE-2026-16243 is a high-severity vulnerability in Eclipse Omr with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 5.7
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-125
Affected product: Eclipse Omr
Published: 2026-07-21
Last modified: 2026-08-11

Description

In Eclipse OMR versions up to 0.11, the arraycmp SIMD implementation for Z and P does not check if the number of bytes to compare is zero.

Frequently asked questions

What is CVE-2026-16243?: In Eclipse OMR versions up to 0.11, the arraycmp SIMD implementation for Z and P does not check if the number of bytes to compare is zero.
How severe is CVE-2026-16243?: CVE-2026-16243 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-16243 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-16243?: CVE-2026-16243 affects Eclipse Omr. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-16243?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2026-16243 published?: CVE-2026-16243 was published on 2026-07-21 and last updated on 2026-08-11.

References

Affected products (1)

cpe:2.3:a:eclipse:omr:*:*:*:*:*:*:*:*

More vulnerabilities in Eclipse Omr

CVE-2026-1188 — Critical (CVSS 9.8): In the Eclipse OMR port library component since release 0.2.0, an API function to return the textual names of all…
CVE-2025-14549 — High (CVSS 8.1): In the Eclipse OMR compiler component, since release 0.7.0, an optimization enabled for Eclipse OpenJ9 consumers of OMR…
CVE-2025-1471 — High (CVSS 7.8): In Eclipse OMR versions 0.2.0 to 0.4.0, some of the z/OS atoe print functions use a constant length buffer for string…
CVE-2019-11773 — High (CVSS 7.8): Prior to 0.1, AIX builds of Eclipse OMR contain unused RPATHs which may facilitate code injection and privilege…
CVE-2019-11774 — High (CVSS 7.4): Prior to 0.1, all builds of Eclipse OMR contain a bug where the loop versioner may fail to privatize a value that is…
CVE-2025-1470 — Medium (CVSS 5.5): In Eclipse OMR, from the initial contribution to version 0.4.0, some OMR internal port library and utilities consumers…

All CVEs affecting Eclipse Omr →

Other CWE-125 (Out-of-bounds Read) vulnerabilities

CVE-2026-24826 — Critical (CVSS 10.0): Out-of-bounds Write, Divide By Zero, NULL Pointer Dereference, Use of Uninitialized Resource, Out-of-bounds Read,…
CVE-2024-22004 — Critical (CVSS 10.0): Due to length check, an attacker with privilege access on a Linux Nonsecure operating system can trigger a…
CVE-2021-41556 — Critical (CVSS 10.0): sqclass.cpp in Squirrel through 2.2.5 and 3.x through 3.1 allows an out-of-bounds read (in the core interpreter) that…
CVE-2021-21777 — Critical (CVSS 10.0): An information disclosure vulnerability exists in the Ethernet/IP UDP handler functionality of EIP Stack Group OpENer…
CVE-2017-14451 — Critical (CVSS 10.0): An exploitable out-of-bounds read vulnerability exists in libevm (Ethereum Virtual Machine) of CPP-Ethereum. A…
CVE-2013-0767 — Critical (CVSS 10.0): The nsSVGPathElement::GetPathLengthScale function in Mozilla Firefox before 18.0, Firefox ESR 10.x before 10.0.12 and…

Browse all CWE-125 (Out-of-bounds Read) vulnerabilities →