CVE-2020-13452Public exploitNetwork attack vector

Code execution via writable tini startup binary

Published Jan 7, 2021 · Updated Aug 4, 2024

Incorrect permissions in Gotenberg 6.2.1 and earlier allow attackers to execute code or interrupt service by overwriting tini. The container image makes /usr/bin/tini writable by the unprivileged gotenberg account even though tini is the container startup process. Exploitation requires a path to write as that account; replacement code runs when the container next starts, while corruption can prevent startup.

CVSS severity9.8
Critical
EPSS probability2.75%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect permissions in Gotenberg 6.2.1 and earlier allow attackers to execute code or interrupt service by overwriting tini. The container image makes /usr/bin/tini writable by the unprivileged gotenberg account even though tini is the container startup process. Exploitation requires a path to write as that account; replacement code runs when the container next starts, while corruption can prevent startup.

The record

CVE
CVE-2020-13452
Published
Jan 7, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-276, T1068
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 7, 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

9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NVDAV:N/AC:L/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.

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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-276Incorrect Default Permissions
T1068Exploitation for Privilege Escalation

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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