CVE-2023-29465Public exploit

Privileged file overwrite via predictable temporary paths

Published Apr 6, 2023 · Updated Feb 12, 2025

Pathname handling in SageMath FlintQS 1.0 allows local users to overwrite files with the privileges of another FlintQS user. The lprels.cpp temporary-file logic concatenates TMPDIR with a UID- and PID-derived name, then opens the predictable path with plain fopen() without exclusive creation. Exploitation requires a shared writable temporary directory and a preplaced symlink; Linux symlink protection blocks the published root-run proof of concept when enabled.

CVSS severity5.5
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Pathname handling in SageMath FlintQS 1.0 allows local users to overwrite files with the privileges of another FlintQS user. The lprels.cpp temporary-file logic concatenates TMPDIR with a UID- and PID-derived name, then opens the predictable path with plain fopen() without exclusive creation. Exploitation requires a shared writable temporary directory and a preplaced symlink; Linux symlink protection blocks the published root-run proof of concept when enabled.

The record

CVE
CVE-2023-29465
Published
Apr 6, 2023
Updated
Feb 12, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1485
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 6, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 12, 2025Record 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 vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/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.

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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1485Data Destruction

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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