How severe is CVE-2022-36324?

CVE-2022-36324 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2022-36324 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-36324?

CVE-2022-36324 primarily affects Siemens Scalance M-800 Firmware. In total, 84 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-36324?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2022-36324 published?

CVE-2022-36324 was published on 2022-08-10 and last updated on 2026-06-17.

CVE-2022-36324

CVE-2022-36324 is a high-severity vulnerability in Siemens Scalance M-800 Firmware with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-770.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-770
Affected product: Siemens Scalance M-800 Firmware
Published: 2022-08-10
Last modified: 2026-06-17

Description

Affected devices do not properly handle the renegotiation of SSL/TLS parameters. This could allow an unauthenticated remote attacker to bypass the TCP brute force prevention and lead to a denial of service condition for the duration of the attack.

Frequently asked questions

What is CVE-2022-36324?: Affected devices do not properly handle the renegotiation of SSL/TLS parameters. This could allow an unauthenticated remote attacker to bypass the TCP brute force prevention and lead to a denial of service condition for the duration of the attack.
How severe is CVE-2022-36324?: CVE-2022-36324 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2022-36324 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-36324?: CVE-2022-36324 primarily affects Siemens Scalance M-800 Firmware. In total, 84 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-36324?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2022-36324 published?: CVE-2022-36324 was published on 2022-08-10 and last updated on 2026-06-17.

References

Affected products (84)

cpe:2.3:o:siemens:scalance_m-800_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_s615_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_w700_ieee_802.11ax_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_w700_ieee_802.11n_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_w700_ieee_802.11ac_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xb-200_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xb205-3_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xb205-3ld_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xb208_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xb213-3_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xb213-3ld_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xb216_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xc-200_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xc206-2_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xc206-2g_poe__firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xc206-2g_poe_eec_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xc206-2sfp_eec_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xc206-2sfp_g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xc206-2sfp_g_\(e\/ip\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xc206-2sfp_g_eec_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xc208_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xc208eec_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xc208g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xc208g_\(e\/ip\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xc208g_eec_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xc208g_poe_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xc216_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xc216-4c_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xc216-4c_g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xc216-4c_g_\(e\/ip\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xc216-4c_g_eec_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xc216eec_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xc224__firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xc224-4c_g__firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xc224-4c_g_\(e\/ip\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xc224-4c_g_eec_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xf-200ba_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xf204-2ba_dna_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xf204-2ba_irt_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xm400_firmware:*:*:*:*:*:*:*:*

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