CVE-2025-63649 json
An out-of-bounds read in the http_parser_transfer_encoding_chunked function (mk_server/mk_http_parser.c) of monkey commit f37e984 allows at…
published 2026-01-29 9 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-206530
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 64%
- public exploits
- 0
- none known
Summary
An out-of-bounds read in the http_parser_transfer_encoding_chunked function (mk_server/mk_http_parser.c) of monkey commit f37e984 allows attackers to cause a Denial of Service (DoS) via sending a crafted POST request to the server.
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 9 mo ago
Exploit prediction
1.03% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/monkey/monkey/issues/426 referenced PoC, tagged "exploit" by a source, unverified
- github.com https://github.com/archersec/security-advisories/blob/master/monkey/monkey-advisory-2025.md referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Classification
- Weakness
-
- CWE-125 Out-of-bounds Read
References
-
github.com
/monkey/monkey/issues/426
exploit, issue-tracking
-
github.com
/archersec/security-advisories/blob/master/monkey/monkey-advisory-2025.md
exploit, third-party-advisory
Sources
- CVE List CVE-2025-63649
- NVD CVE-2025-63649
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