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TI-2020-16693 Aliases CVE-2020-27539GHSA-75m6-wc48-gvw9

Heap overflow with full parsing of HTTP respose in Rostelecom CS-C2SHW 5.0.082.1.

Priority MEDIUM 45CWE-787Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

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.

Why it matters now

EPSS 0.01276 70th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:company:cs-c2shw_firmware:5.0.082.1:*:*:*:*:*:*:*5.0.082.1VulnerableCompany
cpe:2.3:h:company:cs-c2shw:-:*:*:*:*:*:*:*not specified by NVDRunning onCompany
  • cpe:2.3:o:company:cs-c2shw_firmware:5.0.082.1:*:*:*:*:*:*:* Versions 5.0.082.1 Vulnerable ·Company
  • cpe:2.3:h:company:cs-c2shw:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Company

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-27539
  2. 2026-10-03 Alias added: GHSA-75m6-wc48-gvw9

References

Exploit 1

  • TI-2020-16694 Bash injection vulnerability and bypass of signature verification in Rostelecom CS-C2SHW… CVSS 3.1CRITICAL 9.8
  • TI-2020-16695 Denial of Service vulnerability in Rostelecom CS-C2SHW 5.0.082.1. CVSS 3.1HIGH 7.5
  • TI-2020-16696 Rostelecom CS-C2SHW 5.0.082.1 is affected by: Bash command injection. CVSS 3.1MEDIUM 6.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences