CVE-2016-9299

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 96.9%, top 0% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Trending — 3 sources updated this weekWeaponized
9.8EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • 14 internet-exposed hosts are running an affected version right now
  • High exploitation likelihood — EPSS 97%
  • Public exploit code is available (Metasploit, Exploit-DB (verified), epss top5pct, epss high, public exploit)
CISA-KEV: Not listedEPSS PROB: 97%CVSS: 9.8Exploit: Metasploit · Exploit-DB (verified) · epss top5pct · epss high · public exploitExposed: 14

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

The remoting module in Jenkins before 2.32 and LTS before 2.19.3 allows remote attackers to execute arbitrary code via a crafted serialized Java object, which triggers an LDAP query to a third-party server.

Live · internet exposure

14 internet-exposed hosts are running an affected version of CVE-2016-9299 right now.

across 6 countries (United States, China, Bangladesh, Indonesia, Netherlands)top: jenkins
See the live KEV-Exposure radar →Found passively from public internet-scan data — aggregate, host-redacted.

EchelonGraph is the only CVE feed that fuses live vulnerability intelligence with its own live internet-exposure radar — so you see not just that a CVE is exploited, but how much of the internet is exposed to it right now.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
87(Track*)
EG Risk 87/100SSVC: Track*

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation97% × 40%
Automatability30% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
97%
EPSS %ILE
100%
KEV
Not listed

Published

January 12, 2017

Last Modified

May 13, 2026

Advisory Details (10)

Auto-updated Jul 26, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Jenkins CLI - HTTP Java Deserialization (Metasploit) - Linux remote Exploit

https://www.exploit-db.com/exploits/44642/
generic

CloudBees - Nov 16, 2016

https://www.cloudbees.com/jenkins-security-advisory-2016-11-16
generic

Jenkins Security Advisory 2016-11-16

https://wiki.jenkins-ci.org/display/SECURITY/Jenkins+Security+Advisory+2016-11-16
generic

[SECURITY] Fedora 25 Update: jenkins-remoting-2.62.3-1.fc25 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZW2KUKYLNLVDB7STLHLYALCUFLEGCRM6/
generic

Redirecting to Google Groups

https://groups.google.com/forum/#%21original/jenkinsci-advisories/-fc-w9tNEJE/LZ7EOS0fBgAJ
generic

Redirecting to Google Groups

https://groups.google.com/forum/#%21original/jenkinsci-advisories/-fc-w9tNEJE/GRvEzWoJBgAJ
generic

Client Challenge

http://www.slideshare.net/codewhitesec/java-deserialization-vulnerabilities-the-forgotten-bug-class-deepsec-edition
generic
http://www.securityfocus.com/bid/94281
generic

oss-security - Re: CVE request: Jenkins remote code execution vulnerability

http://www.openwall.com/lists/oss-security/2016/11/14/9
generic

oss-security - CVE request: Jenkins remote code execution vulnerability

http://www.openwall.com/lists/oss-security/2016/11/12/4

Affected Packages

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFixed inDependents
org.jenkins-ci.main:jenkins-core1.396 ... 2.9 (355 versions)2.19.3—

Data Freshness Timeline

(refreshed 5× in last 7d / 11× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-26 14:50 UTCEPSS rescore
  2. 2026-07-25 13:11 UTCOSV refresh
  3. 2026-07-23 01:24 UTCEG score recompute
  4. 2026-07-22 22:04 UTCEG score recompute
  5. 2026-07-22 14:04 UTCEPSS rescore
  6. 2026-07-11 08:24 UTCEPSS rescore
  7. 2026-07-08 15:10 UTCEPSS rescore
  8. 2026-07-08 07:35 UTCOSV refresh
  9. 2026-06-30 23:19 UTCEPSS rescore
  10. 2026-06-30 23:19 UTCEPSS rescore
  11. 2026-06-28 04:53 UTCEPSS rescore
  12. 2026-06-23 21:30 UTCEPSS rescore
  13. 2026-06-19 19:35 UTCOSV refresh
  14. 2026-06-15 17:45 UTCEPSS rescore
  15. 2026-06-14 23:14 UTCEPSS rescore
  16. 2026-06-14 23:14 UTCEPSS rescore
  17. 2026-06-13 22:57 UTCEPSS rescore
  18. 2026-06-13 22:57 UTCEPSS rescore
  19. 2026-06-05 22:44 UTCEPSS rescore
  20. 2026-06-05 06:08 UTCEPSS rescore
  21. 2026-06-05 06:08 UTCEPSS rescore
  22. 2026-06-04 13:10 UTCEPSS rescore
  23. 2026-06-04 13:10 UTCEPSS rescore
  24. 2026-06-01 13:49 UTCEPSS rescore
  25. 2026-06-01 13:49 UTCEPSS rescore
Show 16 more
  1. 2026-05-31 00:13 UTCOSV refresh
  2. 2026-05-28 13:42 UTCEPSS rescore
  3. 2026-05-28 13:42 UTCEPSS rescore
  4. 2026-05-27 13:38 UTCEPSS rescore
  5. 2026-05-27 13:38 UTCEPSS rescore
  6. 2026-05-24 16:44 UTCEPSS rescore
  7. 2026-05-22 21:15 UTCEPSS rescore
  8. 2026-05-20 22:37 UTCEPSS rescore
  9. 2026-05-20 22:37 UTCEPSS rescore
  10. 2026-05-20 22:37 UTCEPSS rescore
  11. 2026-05-20 11:21 UTCEPSS rescore
  12. 2026-05-20 11:21 UTCEPSS rescore
  13. 2026-05-18 23:33 UTCEG score recompute
  14. 2026-05-18 21:30 UTCEPSS rescore
  15. 2026-05-18 21:30 UTCEPSS rescore
  16. 2026-05-18 21:30 UTCEPSS rescore

Publicly available exploits

(3 references)

Working exploit code is in the public domain (1 Metasploit module) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-44642✓ verified
    First seen May 17, 2018

    Jenkins CLI - HTTP Java Deserialization (Metasploit)

    Open source ↗
  • Metasploitexploit/linux/misc/jenkins_ldap_deserialize✓ verified
    First seen Nov 16, 2016

    Jenkins CLI HTTP Java Deserialization Vulnerability

    Open source ↗
  • Nucleihttp/cves/2016/CVE-2016-9299.yaml
    First seen Jan 1, 2016

    Jenkins CLI - HTTP Java Deserialization

    Open source ↗

Frequently asked(5)

What is CVE-2016-9299?
CVE-2016-9299 is a critical vulnerability published on January 12, 2017. The remoting module in Jenkins before 2.32 and LTS before 2.19.3 allows remote attackers to execute arbitrary code via a crafted serialized Java object, which triggers an LDAP query to a third-party server.
When was CVE-2016-9299 disclosed?
CVE-2016-9299 was first published in the National Vulnerability Database on January 12, 2017, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2016-9299 actively exploited?
CVE-2016-9299 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 97% probability of exploitation in the next 30 days, which ranks it in the top 0.1% of all scored CVEs.
What is the CVSS score of CVE-2016-9299?
CVE-2016-9299 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2016-9299?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-9299, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2016-9299

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