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Fencer Intel
critical 9.8

CVE-2020-13656 json

In Morgan Stanley Hobbes through 2020-05-21, the array implementation lacks bounds checking, allowing exploitation of an out-of-bounds (OOB…

published 6y ago modified 4mo ago also EUVD-2020-5897

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.1%
EPSS 2.1% chance of exploitation in 30 days, percentile 82%
public exploits
0
none known

Summary

In Morgan Stanley Hobbes through 2020-05-21, the array implementation lacks bounds checking, allowing exploitation of an out-of-bounds (OOB) read/write vulnerability that leads to both local and remote code (via RPC) execution.

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Exploit prediction

2.14% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • know.bishopfox.com https://know.bishopfox.com/advisories/oob-to-rce-exploitation-of-the-hobbes-functional-interpreter referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.