How severe is CVE-2023-27116?

CVE-2023-27116 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-27116 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-27116?

CVE-2023-27116 affects Webassembly. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-27116?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-27116 published?

CVE-2023-27116 was published on 2023-03-10 and last updated on 2026-06-17.

CVE-2023-27116

CVE-2023-27116 is a medium-severity vulnerability in Webassembly with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Webassembly
Published: 2023-03-10
Last modified: 2026-06-17

Description

WebAssembly v1.0.29 discovered to contain an abort in CWriter::MangleType.

Frequently asked questions

What is CVE-2023-27116?: WebAssembly v1.0.29 discovered to contain an abort in CWriter::MangleType.
How severe is CVE-2023-27116?: CVE-2023-27116 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-27116 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-27116?: CVE-2023-27116 affects Webassembly. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-27116?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-27116 published?: CVE-2023-27116 was published on 2023-03-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:webassembly:webassembly:1.0.29:*:*:*:*:*:*:*

More vulnerabilities in Webassembly

CVE-2023-27117 — High (CVSS 7.8): WebAssembly v1.0.29 was discovered to contain a heap overflow via the component component wabt::Node::operator.
CVE-2023-27115 — Medium (CVSS 5.5): WebAssembly v1.0.29 was discovered to contain a segmentation fault via the component wabt::cat_compute_size.

All CVEs affecting Webassembly →