CVE-2023-45927Public exploit

Application crash via unchecked terminfo string offset

Published Mar 27, 2024 · Updated Nov 4, 2025

Arithmetic exception in S-Lang 2.3.2 allows local users to crash a linked terminal application via a crafted terminfo file. _pSLtt_tigetstr accepts a terminfo string-table offset without verifying it is within string_table_size, passing corrupt data into tt_sprintf. Exploitation requires placing the crafted xterm-256color entry in the local terminfo directory and launching a linked application, causing a SIGFPE service interrupt.

CVSS severity9.1
Critical
EPSS probability0.84%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arithmetic exception in S-Lang 2.3.2 allows local users to crash a linked terminal application via a crafted terminfo file. _pSLtt_tigetstr accepts a terminfo string-table offset without verifying it is within string_table_size, passing corrupt data into tt_sprintf. Exploitation requires placing the crafted xterm-256color entry in the local terminfo directory and launching a linked application, causing a SIGFPE service interrupt.

The record

CVE
CVE-2023-45927
Published
Mar 27, 2024
Updated
Nov 4, 2025
Vendor
John E. Davis Software
Product
S-Lang
Classifications
CWE-703, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 27, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 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?

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

  1. Affected versionversion=2.3.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

John E. Davis Software · S-Langversion=2.3.2

Published CVSS scores

9.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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

CWE-703Improper Check or Handling of Exceptional Conditions
T1499.004Application or System Exploitation

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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