Vulnerability · OSV-2023-89
Heap-buffer-overflow in H5O__mtime_new_encode
Published Feb 21, 2023 · catalog updated Oct 15, 2026 · Heap-buffer-overflow in H5O__mtime_new_encode
Open the advisory
Exploitation likelihood is not on this record for OSV-2023-89. A missing EPSS score is not a low risk. Compare Heap-buffer-overflow in H5O__mtime_new_encode with the linked advisory before you change production.
Gaps on this record
- The stored product name is a package slug. The name on this page is taken from the title (Heap-buffer-overflow in H5O__mtime_new_encode).
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- EPSS is missing. A missing score is not a low risk.
- Severity
- Unknown—
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- Awaiting synchronization with FIRST
- Remediation
- Not established
- Affected products
- OSS-Fuzz hdf5
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=56143
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- OSS-Fuzz hdf51.14.1, hdf5-1_10_10, hdf5-1_14_1
How to fix OSV-2023-89
Recommended remediation
No required-action text, fix commit, or clear fixed-version range is stored yet.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
Exploitation likelihood is not on this record for OSV-2023-89. A missing EPSS score is not a low risk. Compare Heap-buffer-overflow in H5O__mtime_new_encode with the linked advisory before you change production.
Which versions are affected?
Compare what you have installed with 1.14.1, hdf5-1_10_10, hdf5-1_14_1. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS is not on this record yet. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Feb 21, 2023 · OpenSSF OSV / OSV Scanner
Detected
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=56143
Oct 15, 2026 · OpenSSF OSV / OSV Scanner
Updated
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=56143
Sources
- OpenSSF OSV / OSV ScannerPackage advisoryOSV-2023-89
Heap-buffer-overflow in H5O__mtime_new_encode
osv.dev
References
Freshness
Last verified in this catalog Oct 15, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.