CVE-2020-6860Public exploitNetwork attack vector

Application crash via oversized reference formatting

Published Jan 13, 2020 · Updated Aug 4, 2024

Stack buffer overflow in libmysofa 0.9.1 allows context-dependent attackers to crash applications via a crafted SOFA file. The readDataVar function passes an attacker-controlled 64-bit reference to sprintf, whose REF%08lX output can exceed the 16-byte number stack buffer. When a consuming application opens the file, the overwrite aborts ASAN-instrumented mysofa2json; broader code execution was not demonstrated.

CVSS severity8.8
High
EPSS probability1.67%
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 libmysofa 0.9.1 allows context-dependent attackers to crash applications via a crafted SOFA file. The readDataVar function passes an attacker-controlled 64-bit reference to sprintf, whose REF%08lX output can exceed the 16-byte number stack buffer. When a consuming application opens the file, the overwrite aborts ASAN-instrumented mysofa2json; broader code execution was not demonstrated.

The record

CVE
CVE-2020-6860
Published
Jan 13, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 13, 2020CVE 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

8.8NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
6.8NIST National Vulnerability DatabaseAV:N/AC:M/Au:N/C:P/I:P/A:P

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-787Out-of-bounds Write
T1204.002Malicious File

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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