VU#772695: A flawed TLS handshake implementation affects Viber Proxy in multiple platforms
2026-03-05T20:52:18Z•90e9ff868ca471ac9e8585e4f92fec5b8dfa69c252bf365fce9594570ea7f541
CVE-2025-65586CVE-2026-2256arbitrary-file-writebinary-parsercaslcloak-modecode-injectioncommand-injectiondefault-credentials","libtasn1","buffer-overflowdenial-of-servicedpi-detectionhardcoded-secretsjwtlibheifms-agentnodejsopen5gsout-of-boundspath-traversalprompt-injectionprototype-pollutionproxypymupdftls-fingerprintingviber
What happened
Collection of CERT/CC vulnerability notes covering multiple independent issues: a flawed TLS handshake fingerprint in Rakuten Viber’s Cloak proxy (allows DPI detection and blocking); a command-injection vulnerability in the MS-Agent framework enabling arbitrary command execution via unsanitized prompt-derived input (tracked as CVE-2026-2256); a PyMuPDF 1.26.5 path traversal in embedded_get allowing arbitrary file writes; a prototype-pollution flaw in CASL Ability (rulesToFields/setByPath) affecting versions 2.4.0–6.7.4; an out-of-bounds read in libheif’s uncompressed codec leading to DoS (CVE-
Why it matters
A reviewed impact interpretation has not been published for this record.
Evidence and limitations
- Source ID
- certcc_vulnotes
- Record identifier
- 90e9ff868ca471ac9e8585e4f92fec5b8dfa69c252bf365fce9594570ea7f541
- Enrichment time
- 2026-03-05T20:52:18Z
- AI-assisted enrichment
- Yes
This record may overlap with other records. Its enrichment can be incomplete or wrong, and machine assistance was used. Validate consequential decisions against the linked source and your own environment.