CVE-2025-4077Public exploit

Application crash via unbounded searchrec name input

Published Apr 29, 2025 · Updated Apr 29, 2025

Stack-based buffer overflow in Code Projects School Billing System 1.0 allows local users to crash the application via a crafted student name. The searchrec function passes the Name input to scanf with an unbounded %[^ ] conversion into a fixed-size stack buffer. Access requires the application's login and local menu workflow; the public proof of concept demonstrates an access-violation crash, while arbitrary code execution is not demonstrated.

CVSS severity4.8
Medium
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Code Projects School Billing System 1.0 allows local users to crash the application via a crafted student name. The searchrec function passes the Name input to scanf with an unbounded %[^ ] conversion into a fixed-size stack buffer. Access requires the application's login and local menu workflow; the public proof of concept demonstrates an access-violation crash, while arbitrary code execution is not demonstrated.

The record

CVE
CVE-2025-4077
Published
Apr 29, 2025
Updated
Apr 29, 2025
Vendor
Code Projects
Product
School Billing System
Classifications
CWE-787, CWE-121, CWE-119, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 29, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 29, 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=1.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Code Projects · School Billing Systemversion=1.0

Published CVSS scores

7.8NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.8VulDBCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
5.3VulDBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
4.3VulDBAV:L/AC:L/Au:S/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.

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

CWE-787Out-of-bounds Write
CWE-121Stack-based Buffer Overflow
CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
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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