CVE-2023-28809Public exploitNetwork attack vector

Session hijacking via unchanged post-login session ID

Published Jun 15, 2023 · Updated Dec 18, 2024

Session fixation in affected Hikvision access control terminal firmware allows remote attackers to gain device operation permissions. The authentication flow retains the pre-login session ID after successful login, allowing the same ID and authenticated user's IP address to represent the logged-in session. Exploitation requires the correct password, IP address, session ID, and timing concurrent with a valid user's login; Hikvision reports that laboratory tests did not reproduce it.

CVSS severity7.5
High
EPSS probability0.64%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Session fixation in affected Hikvision access control terminal firmware allows remote attackers to gain device operation permissions. The authentication flow retains the pre-login session ID after successful login, allowing the same ID and authenticated user's IP address to represent the logged-in session. Exploitation requires the correct password, IP address, session ID, and timing concurrent with a valid user's login; Hikvision reports that laboratory tests did not reproduce it.

The record

CVE
CVE-2023-28809
Published
Jun 15, 2023
Updated
Dec 18, 2024
Vendor
Hikvision
Product
DS-K1T804A Series Access Control Terminal
Classifications
CWE-284, CWE-384, T1550.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 15, 2023CVE publishedPublication date reported by the CVE source.
  2. Dec 18, 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?

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

  1. Affected versionversion=V1.4.0_build221212 <V1.4.0_build221212

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Hikvision · DS-K1T804A Series Access Control Terminalversion=V1.4.0_build221212 <V1.4.0_build221212
Hikvision · DS-K1T341Cversion=V3.3.8_build230112 <V3.3.8_build230112
Hikvision · DS-K1T671 Series Face Recognition Terminalversion=V3.2.30_build221223 <V3.2.30_build221223
Hikvision · DS-K1T320 Series Face Recognition Terminalversion=V3.5.0_build220706 <V3.5.0_build220706
Hikvision · DS-K1T343 Series Face Recognition Terminalversion=V3.14.0_build230117 <V3.14.0_build230117
Hikvision · DS-K1T341A Series Face Recognition Terminalversion=V3.2.30_build221223 <V3.2.30_build221223

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
7.5Hangzhou Hikvision Digital Technology Co., Ltd.CVSS:3.1/AV:N/AC:H/PR:N/UI:R/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-284Improper Access Control
CWE-384Session Fixation
T1550.004Use Alternate Authentication Material Web Session Cookie

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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