CVE-2022-22805
Published: 09 March 2022
Summary
CVE-2022-22805 is a critical-severity Classic Buffer Overflow (CWE-120) vulnerability in Schneider-Electric Smt Series 1015 Ups Firmware. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 7.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
A CWE-120 classic buffer overflow vulnerability exists in the handling of TLS packet reassembly within Schneider Electric's SmartConnect Family UPS products. Affected devices include the SMT Series (ID 1015, firmware 04.5 and prior), SMC Series (ID 1018, 04.2 and prior), SMTL Series (ID 1026, 02.9 and prior), SCL Series (multiple IDs, 02.5–03.1 and prior), and SMX Series (ID 1031, 03.1 and prior). The flaw carries a CVSS 3.1 score of 9.8.
An unauthenticated remote attacker can send a specially crafted TLS packet over the network to trigger the overflow, resulting in remote code execution on the device. No user interaction or credentials are required for exploitation.
The vendor advisory SEVD-2022-067-02, available at https://www.se.com/ww/en/download/document/SEVD-2022-067-02/, addresses the issue for the listed product families.
EPSS scores for this CVE rose from lower values to a peak of 0.1344 on 2025-12-11 before receding to the current 0.0820, indicating a period of increased exploitation interest after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-27948
Vulnerability details
A CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability exists that could cause remote code execution when an improperly handled TLS packet is reassembled. Affected Product: SmartConnect Family: SMT Series (SMT Series ID=1015: UPS 04.5 and…
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prior), SMC Series (SMC Series ID=1018: UPS 04.2 and prior), SMTL Series (SMTL Series ID=1026: UPS 02.9 and prior), SCL Series (SCL Series ID=1029: UPS 02.5 and prior / SCL Series ID=1030: UPS 02.5 and prior / SCL Series ID=1036: UPS 02.5 and prior / SCL Series ID=1037: UPS 03.1 and prior), SMX Series (SMX Series ID=1031: UPS 03.1 and prior)
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Platform-independent managed code eliminates the need for unchecked native buffer copies that are the root cause of classic buffer overflows.