cve.bz

CVE-2020-27539

9.8 criticalEPSS 1.3%

Critical (9.8) in company cs-c2shw firmware. EPSS 1.3% chance of exploitation in the next 30 days.

Heap overflow with full parsing of HTTP respose in Rostelecom CS-C2SHW 5.0.082.1. AgentUpdater service has a self-written HTTP parser and builder. HTTP parser has a heap buffer overflow (OOB write). In default configuration camera parses responses only from HTTPS URLs from config file, so vulnerable code is unreachable and one more bug required to reach it.

Severity

CVSS 3.1

9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
1.3% chance of exploitation in the next 30 days; higher than 69% of CVEs (scores of 2026-10-31)
CWE
CWE-787
Published
Modified
Record from
the NVD, synced

Affected

References

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