CVE-2020-19726Network attack vector

Process-memory access and tool crash

Published Aug 22, 2023 · Updated Oct 4, 2024

Memory corruption in GNU Binutils 2.36 allows attackers to read or write process memory or crash a tool via auxiliary symbol data. The public references identify libbfd.c and auxiliary-symbol processing but do not disclose the affected function or invalid memory operation. Exploitation requires a Binutils consumer to process attacker-controlled input; the bounded outcomes are process-memory access or termination.

CVSS severity8.8
High
EPSS probability0.75%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in GNU Binutils 2.36 allows attackers to read or write process memory or crash a tool via auxiliary symbol data. The public references identify libbfd.c and auxiliary-symbol processing but do not disclose the affected function or invalid memory operation. Exploitation requires a Binutils consumer to process attacker-controlled input; the bounded outcomes are process-memory access or termination.

The record

CVE
CVE-2020-19726
Published
Aug 22, 2023
Updated
Oct 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-400, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 22, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 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 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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
T1204.002User Execution: Malicious File

Public exploit references

No public exploit references are available in this record.

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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