CVE-2017-11465

highpriority · track · 40EPSS 0.017 · 77 %ileEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.68% (77th) EPSS

CVSS 7.5 · high

Is it mine?

3 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

The parser_yyerror function in the UTF-8 parser in Ruby 2.4.1 allows attackers to cause a denial of service (invalid write or read) or possibly have unspecified other impact via a crafted Ruby script, related to the parser_tokadd_utf8 function in parse.y. NOTE: this might have security relevance as a bypass of a $SAFE protection mechanism.

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4

v3.09.8criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Psecondary · FSTEC (BDU) RU

v3.09criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-125USprimaryCWE-787USprimaryCWE-119US

affected products (3)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
Ruby Team Ruby≤ 2.4.1fstec_bduRU
ruby-lang ruby= 2.4.1nvdUScpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2017-07-19modified 2026-06-17

related (27,243)

Related entries.

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+27238 more

references (6)

External citations — patches, advisories, analysis.

https://bugs.ruby-lang.org/issues/13742 cnnvd
https://bugs.ruby-lang.org/projects/ruby-trunk/repository/revisions/59344 cnnvd
https://bugs.ruby-lang.org/issues/13742 enisa_euvd
https://bugs.ruby-lang.org/projects/ruby-trunk/repository/revisions/59344 enisa_euvd
https://bugs.ruby-lang.org/issues/13742Issue TrackingPatchVendor Advisorynvd
https://bugs.ruby-lang.org/projects/ruby-trunk/repository/revisions/59344Issue TrackingPatchVendor Advisorynvd

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