CVE-2020-7044Public exploitNetwork attack vector

Application crash via WASSP off-by-one read

Published Jan 16, 2020 · Updated Aug 4, 2024

An out-of-bounds read in the Wireshark WASSP dissector 3.2.0 allows remote attackers to crash the application with malformed input. The wassp_match_strval function uses off-by-one boundary comparisons when indexing a global string-value table, so a crafted WASSP sub-TLV reads beyond the table. Triggering requires either injecting a malformed WASSP packet onto a monitored network or convincing a user to open a crafted packet trace, and the bounded consequence is an application crash.

CVSS severity7.5
High
EPSS probability3.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

An out-of-bounds read in the Wireshark WASSP dissector 3.2.0 allows remote attackers to crash the application with malformed input. The wassp_match_strval function uses off-by-one boundary comparisons when indexing a global string-value table, so a crafted WASSP sub-TLV reads beyond the table. Triggering requires either injecting a malformed WASSP packet onto a monitored network or convincing a user to open a crafted packet trace, and the bounded consequence is an application crash.

The record

CVE
CVE-2020-7044
Published
Jan 16, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-125, CWE-193, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 16, 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

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.0NIST NVDAV:N/AC:L/Au:N/C:N/I:N/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 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 exploitPublished

Weakness, pattern, technique

CWE-125Out-of-bounds Read
CWE-193Off-by-one Error
T1499Endpoint Denial of Service

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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