CVE-2022-46143 json
Affected devices do not check the TFTP blocksize correctly.
published 2022-12-13 3 y ago modified 2026-06-17 4 mo ago also EUVD-2022-48981
- cvss
- 2.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 55%
- public exploits
- 0
- none known
Summary
Affected devices do not check the TFTP blocksize correctly. This could allow an authenticated attacker to read from an uninitialized buffer that potentially contains previously allocated data.
Patch / fix
- Siemens RUGGEDCOM RM1224 LTE(4G) EU V7.2, V8.0
- Siemens RUGGEDCOM RM1224 LTE(4G) NAM V7.2, V8.0
- Siemens SCALANCE M804PB V7.2, V8.0
- Siemens SCALANCE M812-1 ADSL-Router V7.2, V8.0
- Siemens SCALANCE M816-1 ADSL-Router V7.2, V8.0
- Siemens SCALANCE M826-2 SHDSL-Router V7.2, V8.0
- Siemens SCALANCE M874-2 V7.2, V8.0
- Siemens SCALANCE M874-3 V7.2, V8.0
- Siemens SCALANCE M876-3 V7.2, V8.0
- Siemens SCALANCE M876-3 (ROK) V7.2, V8.0
- Siemens SCALANCE M876-4 V7.2, V8.0
- Siemens SCALANCE M876-4 (EU) V7.2, V8.0
- Siemens SCALANCE M876-4 (NAM) V7.2, V8.0
- Siemens SCALANCE MUM853-1 (EU) V7.2, V8.0
- Siemens SCALANCE MUM856-1 (EU) V7.2, V8.0
- Siemens SCALANCE MUM856-1 (RoW) V7.2, V8.0
- Siemens SCALANCE S615 EEC LAN-Router V7.2, V8.0
- Siemens SCALANCE S615 LAN-Router V7.2, V8.0
- Siemens SCALANCE SC622-2C V2.3, V3.0
- Siemens SCALANCE SC626-2C V2.3, V3.0
- Siemens SCALANCE SC632-2C V2.3, V3.0
- Siemens SCALANCE SC636-2C V2.3, V3.0
- Siemens SCALANCE SC642-2C V2.3, V3.0
- Siemens SCALANCE SC646-2C V2.3, V3.0
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
cisa ICSA-22-349-04 updated cvss 2.7
Siemens SCALANCE Products
-
Siemens RUGGEDCOM RM1224 LTE(4G) EU (6GK6108-4AM00-2BA2) <V7.2 Siemens RUGGEDCOM RM1224 LTE(4G) NAM (6GK6108-4AM00-2DA2) <V7.2 Siemens SCALANCE M804PB (6GK5804-0AP00-2AA2) <V7.2 Siemens SCALANCE M812-1 ADSL-Router (6GK5812-1AA00-2AA2) <V7.2 Siemens SCALANCE M812-1 ADSL-Router (6GK5812-1BA00-2AA2) <V7.2 Siemens SCALANCE M816-1 ADSL-Router (6GK5816-1AA00-2AA2) <V7.2affected: fixed in V7.2 support.industry.siemens.com
+14 more productsfewer
Siemens SCALANCE M816-1 ADSL-Router (6GK5816-1BA00-2AA2) <V7.2 Siemens SCALANCE M826-2 SHDSL-Router (6GK5826-2AB00-2AB2) <V7.2 Siemens SCALANCE M874-2 (6GK5874-2AA00-2AA2) <V7.2 Siemens SCALANCE M874-3 (6GK5874-3AA00-2AA2) <V7.2 Siemens SCALANCE M876-3 (6GK5876-3AA02-2BA2) <V7.2 Siemens SCALANCE M876-3 (ROK) (6GK5876-3AA02-2EA2) <V7.2 Siemens SCALANCE M876-4 (6GK5876-4AA10-2BA2) <V7.2 Siemens SCALANCE M876-4 (EU) (6GK5876-4AA00-2BA2) <V7.2 Siemens SCALANCE M876-4 (NAM) (6GK5876-4AA00-2DA2) <V7.2 Siemens SCALANCE MUM853-1 (EU) (6GK5853-2EA00-2DA1) <V7.2 Siemens SCALANCE MUM856-1 (EU) (6GK5856-2EA00-3DA1) <V7.2 Siemens SCALANCE MUM856-1 (RoW) (6GK5856-2EA00-3AA1) <V7.2 Siemens SCALANCE S615 EEC LAN-Router (6GK5615-0AA01-2AA2) <V7.2 Siemens SCALANCE S615 LAN-Router (6GK5615-0AA00-2AA2) <V7.2 -
Siemens SCALANCE SC622-2C (6GK5622-2GS00-2AC2) <V2.3, >=V2.3, <V3.0 Siemens SCALANCE SC626-2C (6GK5626-2GS00-2AC2) <V2.3, >=V2.3, <V3.0 Siemens SCALANCE SC632-2C (6GK5632-2GS00-2AC2) <V2.3, >=V2.3, <V3.0 Siemens SCALANCE SC636-2C (6GK5636-2GS00-2AC2) <V2.3, >=V2.3, <V3.0 Siemens SCALANCE SC642-2C (6GK5642-2GS00-2AC2) <V2.3, >=V2.3, <V3.0 Siemens SCALANCE SC646-2C (6GK5646-2GS00-2AC2) <V2.3, >=V2.3, <V3.0affected: fixed in V2.3 support.industry.siemens.com
-
Siemens SCALANCE W721-1 RJ45 (6GK5721-1FC00-0AA0) Siemens SCALANCE W721-1 RJ45 (6GK5721-1FC00-0AB0) Siemens SCALANCE W722-1 RJ45 (6GK5722-1FC00-0AA0) Siemens SCALANCE W722-1 RJ45 (6GK5722-1FC00-0AB0) Siemens SCALANCE W722-1 RJ45 (6GK5722-1FC00-0AC0) Siemens SCALANCE W734-1 RJ45 (6GK5734-1FX00-0AA0)affected: no fix planned
+8 more productsfewer
Siemens SCALANCE W734-1 RJ45 (6GK5734-1FX00-0AA6) Siemens SCALANCE W734-1 RJ45 (6GK5734-1FX00-0AB0) Siemens SCALANCE W734-1 RJ45 (USA) (6GK5734-1FX00-0AB6) Siemens SCALANCE W738-1 M12 (6GK5738-1GY00-0AA0) Siemens SCALANCE W738-1 M12 (6GK5738-1GY00-0AB0) Siemens SCALANCE W748-1 M12 (6GK5748-1GD00-0AA0) Siemens SCALANCE W748-1 M12 (6GK5748-1GD00-0AB0) Siemens SCALANCE W748-1 RJ45 (6GK5748-1FC00-0AA0)
157 more affected in the full advisory
Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf
cisa ICSA-23-348-14 updated cvss 2.7
Siemens RUGGEDCOM and SCALANCE M-800/S615 Family
-
Siemens RUGGEDCOM RM1224 LTE(4G) EU (6GK6108-4AM00-2BA2) <V8.0 Siemens RUGGEDCOM RM1224 LTE(4G) NAM (6GK6108-4AM00-2DA2) <V8.0 Siemens SCALANCE M804PB (6GK5804-0AP00-2AA2) <V8.0 Siemens SCALANCE M812-1 ADSL-Router (6GK5812-1AA00-2AA2) <V8.0 Siemens SCALANCE M812-1 ADSL-Router (6GK5812-1BA00-2AA2) <V8.0 Siemens SCALANCE M816-1 ADSL-Router (6GK5816-1AA00-2AA2) <V8.0affected: fixed in V8.0 support.industry.siemens.com
+14 more productsfewer
Siemens SCALANCE M816-1 ADSL-Router (6GK5816-1BA00-2AA2) <V8.0 Siemens SCALANCE M826-2 SHDSL-Router (6GK5826-2AB00-2AB2) <V8.0 Siemens SCALANCE M874-2 (6GK5874-2AA00-2AA2) <V8.0 Siemens SCALANCE M874-3 (6GK5874-3AA00-2AA2) <V8.0 Siemens SCALANCE M876-3 (6GK5876-3AA02-2BA2) <V8.0 Siemens SCALANCE M876-3 (ROK) (6GK5876-3AA02-2EA2) <V8.0 Siemens SCALANCE M876-4 (6GK5876-4AA10-2BA2) <V8.0 Siemens SCALANCE M876-4 (EU) (6GK5876-4AA00-2BA2) <V8.0 Siemens SCALANCE M876-4 (NAM) (6GK5876-4AA00-2DA2) <V8.0 Siemens SCALANCE MUM853-1 (EU) (6GK5853-2EA00-2DA1) <V8.0 Siemens SCALANCE MUM856-1 (EU) (6GK5856-2EA00-3DA1) <V8.0 Siemens SCALANCE MUM856-1 (RoW) (6GK5856-2EA00-3AA1) <V8.0 Siemens SCALANCE S615 EEC LAN-Router (6GK5615-0AA01-2AA2) <V8.0 Siemens SCALANCE S615 LAN-Router (6GK5615-0AA00-2AA2) <V8.0
Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf
Exploit prediction
0.75% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 2.7 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N |
| CNA | 4.0 | 5.1 | CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N |
| CNA | 4.0 | 5.1 | CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- Siemens RUGGEDCOM RM1224 LTE(4G) EU
- Siemens RUGGEDCOM RM1224 LTE(4G) NAM
- Siemens SCALANCE M804PB
- Siemens SCALANCE M812-1 ADSL-Router
- Siemens SCALANCE M816-1 ADSL-Router
- Siemens SCALANCE M826-2 SHDSL-Router
- Siemens SCALANCE M874-2
- Siemens SCALANCE M874-3
- Siemens SCALANCE M876-3
- Siemens SCALANCE M876-3 (ROK)
- Siemens SCALANCE M876-4
- Siemens SCALANCE M876-4 (EU)
- Siemens SCALANCE M876-4 (NAM)
- Siemens SCALANCE MUM853-1 (EU)
- Siemens SCALANCE MUM856-1 (EU)
- Siemens SCALANCE MUM856-1 (RoW)
- Siemens SCALANCE S615 EEC LAN-Router
- Siemens SCALANCE S615 LAN-Router
- Siemens SCALANCE SC622-2C
- Siemens SCALANCE SC626-2C
- Siemens SCALANCE SC632-2C
- Siemens SCALANCE SC636-2C
- Siemens SCALANCE SC642-2C
- Siemens SCALANCE SC646-2C
- Siemens SCALANCE W1748-1 M12
- Siemens SCALANCE W1788-1 M12
- Siemens SCALANCE W1788-2 EEC M12
- Siemens SCALANCE W1788-2 M12
- Siemens SCALANCE W1788-2IA M12
- Siemens SCALANCE W721-1 RJ45
- Siemens SCALANCE W722-1 RJ45
- Siemens SCALANCE W734-1 RJ45
- Siemens SCALANCE W734-1 RJ45 (USA)
- Siemens SCALANCE W738-1 M12
- Siemens SCALANCE W748-1 M12
- Siemens SCALANCE W748-1 RJ45
- Siemens SCALANCE W761-1 RJ45
- Siemens SCALANCE W774-1 M12 EEC
- Siemens SCALANCE W774-1 RJ45
- Siemens SCALANCE W774-1 RJ45 (USA)
- Siemens SCALANCE W778-1 M12
- Siemens SCALANCE W778-1 M12 EEC
- Siemens SCALANCE W778-1 M12 EEC (USA)
- Siemens SCALANCE W786-1 RJ45
- Siemens SCALANCE W786-2 RJ45
- Siemens SCALANCE W786-2 SFP
- Siemens SCALANCE W786-2IA RJ45
- Siemens SCALANCE W788-1 M12
- Siemens SCALANCE W788-1 RJ45
- Siemens SCALANCE W788-2 M12
Classification
- Weakness
-
- CWE-1284 Improper Validation of Specified Quantity in Input
References
Sources
- CVE List CVE-2022-46143
- NVD CVE-2022-46143
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.