CVE-2020-25782Public exploitNetwork attack vector

Unauthenticated code execution via unbounded sprintf

Published Jan 28, 2021 · Updated Aug 4, 2024

Stack-based buffer overflow in Accfly Wireless Security IR Camera 720P System 3.10.73 through 4.15.77 allows remote attackers to execute code. CNetClientManage::ServerIP_Proto_Set passes packet data to sprintf with an unrestricted %s conversion into a 16-byte stack buffer. No authentication is required; reliable code execution must preserve a following mutex object and obtain suitable heap addresses, while the published PoC crashes the Alloca process.

CVSS severity9.8
Critical
EPSS probability2.94%
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 Accfly Wireless Security IR Camera 720P System 3.10.73 through 4.15.77 allows remote attackers to execute code. CNetClientManage::ServerIP_Proto_Set passes packet data to sprintf with an unrestricted %s conversion into a 16-byte stack buffer. No authentication is required; reliable code execution must preserve a following mutex object and obtain suitable heap addresses, while the published PoC crashes the Alloca process.

The record

CVE
CVE-2020-25782
Published
Jan 28, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 28, 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

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

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1190Exploit Public-Facing Application

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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