CVE-2020-2771Public exploit

Local data disclosure via Whodo heap overflow

Published Apr 15, 2020 · Updated Sep 30, 2024

Heap-based buffer overflow in Oracle Solaris 10 and 11 Whodo allows local users to read a subset of accessible data. The whodo and w binaries copy process arguments into an 81-byte heap buffer, then append the process name without checking remaining capacity. A low-privileged local account and interaction by another person are required; Oracle limits the supported impact to unauthorized read access.

CVSS severity2.5
Low
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer overflow in Oracle Solaris 10 and 11 Whodo allows local users to read a subset of accessible data. The whodo and w binaries copy process arguments into an 81-byte heap buffer, then append the process name without checking remaining capacity. A low-privileged local account and interaction by another person are required; Oracle limits the supported impact to unauthorized read access.

The record

CVE
CVE-2020-2771
Published
Apr 15, 2020
Updated
Sep 30, 2024
Vendor
Oracle
Product
Oracle Solaris
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 15, 2020CVE publishedPublication date reported by the CVE source.
  2. Sep 30, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10
  2. Affected versionversion=11

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Oracle · Oracle Solarisversion=10; version=11

Published CVSS scores

2.5OracleCVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:N/A:N
2.5NIST NVDCVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:N/A:N
1.2NIST NVDAV:L/AC:H/Au:N/C:P/I:N/A:N

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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

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Technologies

Your stack

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Your stack

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