CVE-2020-36152Public exploitNetwork attack vector

Code execution via undersized reference buffer

Published Feb 8, 2021 · Updated Aug 4, 2024

Stack buffer overflow in Symonics libmysofa 0.5 through 1.1 allows attackers to execute arbitrary code through a crafted SOFA file. The readDataVar function in hdf/dataobject.c uses sprintf to format an attacker-controlled reference value into a stack buffer that is four bytes too small. Code execution requires an application using the library to open the malicious file; strong stack protection instead turns the overwrite into a crash.

CVSS severity8.8
High
EPSS probability2.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack buffer overflow in Symonics libmysofa 0.5 through 1.1 allows attackers to execute arbitrary code through a crafted SOFA file. The readDataVar function in hdf/dataobject.c uses sprintf to format an attacker-controlled reference value into a stack buffer that is four bytes too small. Code execution requires an application using the library to open the malicious file; strong stack protection instead turns the overwrite into a crash.

The record

CVE
CVE-2020-36152
Published
Feb 8, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-120, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 8, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1203Exploitation for Client Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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