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Fencer Vulns
high 8.8

CVE-2020-36152 json

Buffer overflow in readDataVar in hdf/dataobject.c in Symonics libmysofa 0.5 - 1.1 allows attackers to execute arbitrary code via a crafted…

published 2021-02-08 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-23730

cvss
8.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.4%
EPSS 2.4% chance of exploitation in 30 days, percentile 83%
public exploits
0
none known

Summary

Buffer overflow in readDataVar in hdf/dataobject.c in Symonics libmysofa 0.5 - 1.1 allows attackers to execute arbitrary code via a crafted SOFA.

Patch / fix

  • libmysofa Debian 14, Debian 13, Debian 12 1.2~dfsg0-1

debian advisories DEBIAN-CVE-2020-36152

  • libmysofa Ubuntu 22.04 LTS 1.2~dfsg0-1

ubuntu advisories UBUNTU-CVE-2020-36152

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libmysofa Package Hub 15 SP2 0.9.1-bp152.4.3.1
  • libmysofa openSUSE Leap 15.2 0.9.1-lp152.3.3.1

opensuse advisories openSUSE-SU-2021:0459-1openSUSE-SU-2021:0444-1

  • libmysofa Arch Linux 1.2-1

arch linux advisories AVG-1547

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-36152 updated cvss 8.8

libmysofa: Buffer overflow in readDataVar in hdf/dataobject.c

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.37% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/hoene/libmysofa/issues/136 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-120 Buffer Copy without Checking Size of Input

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.