CVE-2021-25668
Reported by siemens · Published April 22, 2021
A vulnerability has been identified in SCALANCE X200-4P IRT (All versions < 5.5.1), SCALANCE X201-3P IRT (All versions < 5.5.1), SCALANCE X201-3P IRT PRO (All versions < 5.5.1), SCALANCE X202-2 IRT (All versions < 5.5.1), SCALANCE X202-2P IRT (incl. SIPLUS NET variant) (All versions < 5.5.1), SCALANCE X202-2P IRT PRO (All versions < 5.5.1), SCALANCE X204 IRT (All versions < 5.5.1), SCALANCE X204 IRT PRO (All versions < 5.5.1), SCALANCE X204-2 (incl. SIPLUS NET variant) (All versions < V5.2.5), SCALANCE X204-2FM (All versions < V5.2.5), SCALANCE X204-2LD (incl. SIPLUS NET variant) (All versions < V5.2.5), SCALANCE X204-2LD TS (All versions < V5.2.5), SCALANCE X204-2TS (All versions < V5.2.5), SCALANCE X206-1 (All versions < V5.2.5), SCALANCE X206-1LD (All versions < V5.2.5), SCALANCE X208 (incl. SIPLUS NET variant) (All versions < V5.2.5), SCALANCE X208PRO (All versions < V5.2.5), SCALANCE X212-2 (incl. SIPLUS NET variant) (All versions < V5.2.5), SCALANCE X212-2LD (All versions < V5.2.5), SCALANCE X216 (All versions < V5.2.5), SCALANCE X224 (All versions < V5.2.5), SCALANCE XF201-3P IRT (All versions < 5.5.1), SCALANCE XF202-2P IRT (All versions < 5.5.1), SCALANCE XF204 (All versions < V5.2.5), SCALANCE XF204 IRT (All versions < 5.5.1), SCALANCE XF204-2 (incl. SIPLUS NET variant) (All versions < V5.2.5), SCALANCE XF204-2BA IRT (All versions < 5.5.1), SCALANCE XF206-1 (All versions < V5.2.5), SCALANCE XF208 (All versions < V5.2.5). Incorrect processing of POST requests in the webserver may result in write out of bounds in heap. An attacker might leverage this to cause denial-of-service on the device and potentially remotely execute code.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| scalance_x206-1ld_firmware | siemens | 5.2.5 |
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Siemens | SCALANCE X200-4P IRT | All versions < 5.5.1 |
| Siemens | SCALANCE X201-3P IRT | All versions < 5.5.1 |
| Siemens | SCALANCE X201-3P IRT PRO | All versions < 5.5.1 |
| Siemens | SCALANCE X202-2 IRT | All versions < 5.5.1 |
| Siemens | SCALANCE X202-2P IRT (incl. SIPLUS NET variant) | All versions < 5.5.1 |
| Siemens | SCALANCE X202-2P IRT PRO | All versions < 5.5.1 |
| Siemens | SCALANCE X204 IRT | All versions < 5.5.1 |
| Siemens | SCALANCE X204 IRT PRO | All versions < 5.5.1 |
| Siemens | SCALANCE X204-2 (incl. SIPLUS NET variant) | All versions < V5.2.5 |
| Siemens | SCALANCE X204-2FM | All versions < V5.2.5 |
| Siemens | SCALANCE X204-2LD (incl. SIPLUS NET variant) | All versions < V5.2.5 |
| Siemens | SCALANCE X204-2LD TS | All versions < V5.2.5 |
| Siemens | SCALANCE X204-2TS | All versions < V5.2.5 |
| Siemens | SCALANCE X206-1 | All versions < V5.2.5 |
| Siemens | SCALANCE X206-1LD | All versions < V5.2.5 |
| Siemens | SCALANCE X208 (incl. SIPLUS NET variant) | All versions < V5.2.5 |
| Siemens | SCALANCE X208PRO | All versions < V5.2.5 |
| Siemens | SCALANCE X212-2 (incl. SIPLUS NET variant) | All versions < V5.2.5 |
| Siemens | SCALANCE X212-2LD | All versions < V5.2.5 |
| Siemens | SCALANCE X216 | All versions < V5.2.5 |
…and 38 more
Timeline
- Apr 13, 2021 CVE Published
- Apr 27, 2021 EPSS Score (30 in total, the first dated here)
- Aug 3, 2024 CVE Updated
- Apr 4, 2026 Security Advisory
- Aug 8, 2026 Coalition ESS Score
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln CVE-2021-25668
vulnetix vdb fixes CVE-2021-25668Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/CVE-2021-25668/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart