Some access control products are vulnerable to a session hijacking attack because the product does not update the session ID after a user successfully logs in. To exploit the vulnerability, attackers have to request the session ID at the same time as a valid user logs in, and gain device operation permissions by forging the IP and session ID of an authenticated user.
Conclusion & alert: CVE-2023-28809 is rated Moderate Risk (43.1/100): CVSS High severity, with low exploitation likelihood (EPSS 0.17%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-03-10 | 0.13% | 0.17% | +0.03% |
| 2 | 2025-11-21 | 0.28% | 0.13% | -0.15% |
| 3 | 2025-11-18 | — | 0.28% | — |
Full EPSS history (10 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 3.1 | HIGH |
|
1.6 | 5.9 | [email protected] |
| 7.5 | 3.1 | HIGH |
|
1.6 | 5.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| hikvision | ds-k1t320efwx_firmware | — | cpe:2.3:o:hikvision:ds-k1t320efwx_firmware:-:*:*:*:*:*:*:* |
| hikvision | ds-k1t320efx_firmware | — | cpe:2.3:o:hikvision:ds-k1t320efx_firmware:-:*:*:*:*:*:*:* |
| hikvision | ds-k1t320ewx_firmware | — | cpe:2.3:o:hikvision:ds-k1t320ewx_firmware:-:*:*:*:*:*:*:* |
| hikvision | ds-k1t320ex_firmware | — | cpe:2.3:o:hikvision:ds-k1t320ex_firmware:-:*:*:*:*:*:*:* |
| hikvision | ds-k1t320mfwx_firmware | — | cpe:2.3:o:hikvision:ds-k1t320mfwx_firmware:-:*:*:*:*:*:*:* |
| hikvision | ds-k1t320mfx_firmware | — | cpe:2.3:o:hikvision:ds-k1t320mfx_firmware:-:*:*:*:*:*:*:* |
| hikvision | ds-k1t320mwx_firmware | — | cpe:2.3:o:hikvision:ds-k1t320mwx_firmware:-:*:*:*:*:*:*:* |
| hikvision | ds-k1t320mx_firmware | — | cpe:2.3:o:hikvision:ds-k1t320mx_firmware:-:*:*:*:*:*:*:* |
| hikvision | ds-k1t341am_firmware | — | cpe:2.3:o:hikvision:ds-k1t341am_firmware:-:*:*:*:*:*:*:* |
| hikvision | ds-k1t341amf_firmware | — | cpe:2.3:o:hikvision:ds-k1t341amf_firmware:-:*:*:*:*:*:*:* |
| hikvision | ds-k1t341cm_firmware | — | cpe:2.3:o:hikvision:ds-k1t341cm_firmware:-:*:*:*:*:*:*:* |
| hikvision | ds-k1t343ewx_firmware | — | cpe:2.3:o:hikvision:ds-k1t343ewx_firmware:-:*:*:*:*:*:*:* |
| hikvision | ds-k1t343ex_firmware | — | cpe:2.3:o:hikvision:ds-k1t343ex_firmware:-:*:*:*:*:*:*:* |
| hikvision | ds-k1t343mwx_firmware | — | cpe:2.3:o:hikvision:ds-k1t343mwx_firmware:-:*:*:*:*:*:*:* |
| hikvision | ds-k1t343mx_firmware | — | cpe:2.3:o:hikvision:ds-k1t343mx_firmware:-:*:*:*:*:*:*:* |
| hikvision | ds-k1t671_firmware | — | cpe:2.3:o:hikvision:ds-k1t671_firmware:-:*:*:*:*:*:*:* |
| hikvision | ds-k1t671m_firmware | — | cpe:2.3:o:hikvision:ds-k1t671m_firmware:-:*:*:*:*:*:*:* |
| hikvision | ds-k1t671mf_firmware | — | cpe:2.3:o:hikvision:ds-k1t671mf_firmware:-:*:*:*:*:*:*:* |
| hikvision | ds-k1t671t_firmware | — | cpe:2.3:o:hikvision:ds-k1t671t_firmware:-:*:*:*:*:*:*:* |
| hikvision | ds-k1t671tm_firmware | — | cpe:2.3:o:hikvision:ds-k1t671tm_firmware:-:*:*:*:*:*:*:* |
| hikvision | ds-k1t671tm-3xf_firmware | — | cpe:2.3:o:hikvision:ds-k1t671tm-3xf_firmware:-:*:*:*:*:*:*:* |
| hikvision | ds-k1t671tmf_firmware | — | cpe:2.3:o:hikvision:ds-k1t671tmf_firmware:-:*:*:*:*:*:*:* |
| hikvision | ds-k1t671tmfw_firmware | — | cpe:2.3:o:hikvision:ds-k1t671tmfw_firmware:-:*:*:*:*:*:*:* |
| hikvision | ds-k1t671tmw_firmware | — | cpe:2.3:o:hikvision:ds-k1t671tmw_firmware:-:*:*:*:*:*:*:* |
| hikvision | ds-k1t804af_firmware | — | cpe:2.3:o:hikvision:ds-k1t804af_firmware:-:*:*:*:*:*:*:* |
| hikvision | ds-k1t804amf_firmware | — | cpe:2.3:o:hikvision:ds-k1t804amf_firmware:-:*:*:*:*:*:*:* |