CVE-2025-7770
Raw vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/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:XSummary
CVE-2025-7770 is a high-severity PRNG (CWE-337) vulnerability in Cisa (inferred from references). Its CVSS base score is 8.7 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Weaken Encryption (T1600); ranked at the 40th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SC-12 (Cryptographic Key Establishment and Management) — see the control section below for these in your framework.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-23880
Vulnerability Data
Tigo Energy's CCA device is vulnerable to insecure session ID generation in their remote API. The session IDs are generated using a predictable method based on the current timestamp, allowing attackers to recreate valid session IDs. When combined with the…
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ability to circumvent session ID requirements for certain commands, this enables unauthorized access to sensitive device functions on connected solar optimization systems.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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- 3 hardening rules · 1 OS baseline
V6.5.3V7.2.3V11.5.1
Mitigating Controls (NIST 800-53 r5) AI
Developer testing and evaluation can discover use of predictable seeds such as time or PID.
Proper cryptographic key establishment and management includes using unpredictable seeds for PRNGs that feed key generation.
Engineering principles can require cryptographically secure PRNGs seeded from high-entropy sources.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Secure SDLC practices directly require cryptographically secure PRNG seeding, preventing predictable seeds while the control addresses many additional weaknesses.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Security testing can detect and prevent use of weak or predictable PRNG seeds.
Mandates use of cryptography, which includes selecting and seeding PRNGs with sufficient entropy.
Requires secure development practices that should include proper PRNG seeding.
Application security requirements can specify cryptographic controls that mitigate predictable seeds.
Secure architecture principles include choosing cryptographically strong random number generation.
Secure coding standards explicitly forbid predictable PRNG seeds.
Hardening callouts derived
Configuration rules from DISA STIG baselines that bear on weaknesses of the type cited by this CVE. Each rule is shown with the relationship its mapping actually records, against the CWE it was authored against. Derived via CVE→CWE over `controls_xwalks` (authoritative rows only; rows rated `none` are excluded).
Oracle Linux 8 (3 rules)
- V-248563 The OL 8 SSH server must be configured to use strong entropy. prevents CWE-337
- V-248600 OL 8 must have the packages required to use the hardware random number generator entropy gatherer service. prevents CWE-337
- V-248599 OL 8 must enable the hardware random number generator entropy gatherer service. prevents CWE-337