The SSLv2 protocol, as used in OpenSSL before 1.0.1s and 1.0.2 before 1.0.2g and other products, requires a server to send a ServerVerify message before establishing that a client possesses certain plaintext RSA data, which makes it easier for remote attackers to decrypt TLS ciphertext data by leveraging a Bleichenbacher RSA padding oracle, aka a "DROWN" attack.
CVE-2016-0800
“▲” beside the score: it is higher than NVD's CVSS score.
Score elevated to 8.8 because EPSS predicted 82% probability of exploitation within the next 30 days (99th percentile of EPSS-scored CVEs) when EchelonGraph scored this CVE. NVD baseline CVSS 5.9 retained for reference. Confidence: see factors.
Also known asEUVD-2016-0811 (ENISA EUVD) · GHSA-fqw2-3v24-gc79 (GitHub Security Advisories)Source: ENISA EUVD
- High exploitation likelihood — EPSS 82%
- Public exploit code is available (Metasploit)
A fix is available — apply it.
- CVSS v3
- 5.9
- EG Score
- 8.8HIGHhigh confidence
- EG Risk
- 59EG Risk 59/100
EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.
How it’s computed (value × EchelonGraph’s weight)Severity59% × 45%Impact severity (EG Severity): CVSS 5.9 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation82% × 40%FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.Automatability0% × 15%CISA's BOD 26-04 default: no one has published Automatable for this CVE, and CISA treats it as “no” for a CVE not in KEV.SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.Exploitation public PoC (exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high. - EPSS PROB
- 82%
- EPSS %ILE
- 99th
- KEV
- Not listed
What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)
The EG score (8.8): severity, escalated by confirmed exploitation. This CVE's 8.8 is EPSS's lift toward 9.0 from its impact severity (EG Severity, CVSS 5.9 MEDIUM): a likelihood of exploitation, not impact.
- EG Severity
- 5.9 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
- EG Likelihood
- 82% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-29). FIRST's exploitation probability, not an EchelonGraph model.
- Confirmed exploitation
- None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
- EG Priority
- SSVC Track* at medium mission impactTrack at low, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.
SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track* at medium and Attend at high mission impact.
A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
Exploitation public PoC (exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table
BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.
The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
March 1, 2016
Last Modified
June 17, 2026
Advisory Details (2)
Auto-updated Oct 18, 2026Vendor Advisories for CVE-2016-0800(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Patch Availability(12)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| redhat | patch | 2016-07-27 | redhat |
| redhat | openssl | 2016-03-22 | redhat |
| redhat | patch | 2016-03-14 | redhat |
| redhat | patch | 2016-03-14 | redhat |
| redhat | openssl098e-0:0.9.8e-29.el7_2.3 | 2016-03-09 | redhat |
| redhat | rhev-hypervisor7-0:7.2-20160302.1.el7ev | 2016-03-09 | redhat |
| redhat | openssl-1:1.0.1e-42.ael7b_1.10 | 2016-03-01 | redhat |
| redhat | openssl-0:0.9.7a-43.23.el4 | 2016-03-01 | redhat |
| redhat | openssl-1:1.0.1e-51.el7_2.4 | 2016-03-01 | redhat |
| redhat | openssl-0:1.0.1e-16.el6_5.16 | 2016-03-01 | redhat |
| redhat | openssl-0:0.9.8e-26.el5_9.5 | 2016-03-01 | redhat |
| redhat | openssl-0:0.9.8e-39.el5_11 | 2016-03-01 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(8 across 4 ecosystems)
Debian:11(2)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| nss | — |
| — |
| openssl | — |
| — |
Debian:12(2)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| nss | — |
| — |
| openssl | — |
| — |
Debian:13(2)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| nss | — |
| — |
| openssl | — |
| — |
Debian:14(2)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| nss | — |
| — |
| openssl | — |
| — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
All Vendor Advisories
(12)
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
- Red HatRHSA-2016:0301IMPORTANT2016-03-01
RHSA-2016:0301 — Important
- Red HatRHSA-2016:0302IMPORTANT2016-03-01
RHSA-2016:0302 — Important
- Red HatRHSA-2016:0303IMPORTANT2016-03-01
RHSA-2016:0303 — Important
- Red HatRHSA-2016:0304IMPORTANT2016-03-01
RHSA-2016:0304 — Important
- Red HatRHSA-2016:0305IMPORTANT2016-03-01
RHSA-2016:0305 — Important
- Red HatRHSA-2016:0306IMPORTANT2016-03-01
RHSA-2016:0306 — Important
- Red HatRHSA-2016:0372IMPORTANT2016-03-01
RHSA-2016:0372 — Important
- Red HatRHSA-2016:0379IMPORTANT2016-03-01
RHSA-2016:0379 — Important
- Red HatRHSA-2016:0445IMPORTANT2016-03-01
RHSA-2016:0445 — Important
- Red HatRHSA-2016:0446IMPORTANT2016-03-01
RHSA-2016:0446 — Important
- Red HatRHSA-2016:0490IMPORTANT2016-03-01
RHSA-2016:0490 — Important
- Red HatRHSA-2016:1519IMPORTANT2016-03-01
RHSA-2016:1519 — Important
Data Freshness Timeline
(refreshed 7× in last 7d / 27× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
Showing the most recent 87 of 97 refreshes on record for this CVE.
A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 13 repeat rows among the latest 100 are merged into the row they repeat. The 10 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-10-30 16:27 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-10-30 00:37 UTCEG score recompute
- 2026-10-30 00:37 UTCVendor advisory
- 2026-10-30 00:37 UTCGHSA enrichmentGHSA-fqw2-3v24-gc79 · GitHub CVSS 5.9
- 2026-10-29 18:55 UTCOSV refresh
- 2026-10-28 16:26 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-10-27 16:26 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-10-25 19:50 UTCEG score recompute
- 2026-10-25 16:26 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-10-23 16:26 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-10-22 08:39 UTCEG score recompute
- 2026-10-22 08:39 UTCVendor advisory
- 2026-10-22 08:39 UTCGHSA enrichmentGHSA-fqw2-3v24-gc79 · GitHub CVSS 5.9
- 2026-10-21 16:26 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-10-20 16:26 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-10-18 16:26 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-10-18 10:56 UTCEG score recompute
- 2026-10-15 16:26 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-10-14 16:27 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-10-13 16:26 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-10-12 20:47 UTCVendor advisory
- 2026-10-12 20:47 UTCGHSA enrichmentGHSA-fqw2-3v24-gc79 · GitHub CVSS 5.9
- 2026-10-12 20:47 UTCEG score recompute
- 2026-10-12 01:10 UTCEG score recompute
- 2026-10-09 20:01 UTCEPSS rescoreEPSS 82% · 99th percentile
Show 62 moreShow fewer
- 2026-10-08 20:25 UTCOSV refresh
- 2026-10-06 15:11 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-10-03 14:21 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-09-30 09:09 UTCEG score recompute
- 2026-09-27 13:40 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-09-26 15:53 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-09-23 13:41 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-09-19 02:36 UTCOSV refresh
- 2026-09-18 19:22 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-09-12 14:55 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-09-10 09:26 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-09-06 13:42 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-09-01 13:48 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-09-01 03:31 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-08-31 06:19 UTCOSV refresh
- 2026-08-27 14:20 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-08-26 14:41 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-08-21 23:44 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-08-19 16:59 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-08-16 02:09 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-08-15 01:25 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-08-14 13:24 UTCOSV refresh
- 2026-08-12 13:46 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-08-04 15:04 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-08-04 10:31 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-08-01 04:11 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-07-30 02:24 UTCOSV refresh
- 2026-07-30 01:26 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-07-28 15:31 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-07-26 14:50 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-07-24 14:13 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-07-23 01:21 UTCEG score recompute
- 2026-07-23 00:22 UTCEG score recompute▲ 2.90
- 2026-07-22 22:00 UTCEG score recompute▼ 3.10
- 2026-07-22 14:04 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-07-21 15:21 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-07-20 17:03 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-07-16 16:59 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-07-15 16:54 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-07-13 22:26 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-07-12 11:08 UTCOSV refresh
- 2026-07-09 19:05 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-07-07 13:42 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-07-06 16:24 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-07-06 02:20 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-07-04 06:28 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-07-01 15:02 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-06-25 13:47 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-06-24 14:02 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-06-23 21:30 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-06-23 16:50 UTCOSV refresh
- 2026-06-21 01:57 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-06-17 17:49 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-06-15 17:45 UTCEPSS rescoreEPSS 82% · 99th percentile
- 2026-06-13 22:57 UTCEPSS rescoreEPSS 90% · 99th percentile
- 2026-06-11 13:57 UTCEPSS rescoreEPSS 90% · 99th percentile
- 2026-06-10 13:18 UTCEPSS rescoreEPSS 90% · 99th percentile
- 2026-06-08 14:14 UTCEPSS rescoreEPSS 90% · 99th percentile
- 2026-06-06 22:29 UTCOSV refresh
- 2026-06-05 22:44 UTCEPSS rescoreEPSS 90% · 99th percentile
- 2026-05-31 00:14 UTCEPSS rescoreEPSS 90% · 99th percentile
- 2026-05-28 13:42 UTCEPSS rescoreEPSS 90% · 99th percentile
Publicly available exploits
(2 references)Public exploit code is referenced for this CVE (1 Metasploit module), as is 1 GitHub checker repository. A GitHub repository named or described as a checker or scanner checks whether a system is affected; it is not necessarily exploit code. Defenders should treat patch urgency accordingly.
- Metasploitauxiliary/scanner/ssl/ssl_version✓ verifiedPublished Oct 17, 2014
SSL/TLS Version Detection
Open source ↗ - GitHub checkeranthophilee/A2SV--SSL-VUL-ScanPublished Jan 1, 2021
A2SV = Auto Scanning to SSL Vulnerability HeartBleed, CCS Injection, SSLv3 POODLE, FREAK... etc Support Vulnerability [CVE-2007-1858] Anonymous Cipher [CVE-2012-4929] CRIME(SPDY) [CVE-2014-0160] CCS Injection [CVE-2014-0224] HeartBleed [CVE-2014-3566] SSLv3 POODLE [CVE-2015-0204] FREAK Attack [CVE-2015-4000] LOGJAM Attack [CVE-2016-0800] SSLv2 DROWN Installation : $ apt update && apt upgrade $ apt install git $ apt install python2 $ apt install python $ git clone https://github.com/hahwul/ a2sv $ cd a2sv $ chmod +x * $ pip2 install -r requirements.txt usage : $ python2 a2sv.py -h It shows all commands how we can use this tool $ python a2sv.py -t 127.0.0.1 127.0.0.1 = target means here own device
Open source ↗
Related CVEs(same product + same vendor + same CWE)
Same product
10 shownDebian:11:nss
- CVE-2009-3555EG 9.8EPSS p100CRITICAL
- CVE-2015-4000NVD 3.7EG 9.0EPSS p100CRITICAL
- CVE-2014-3566NVD 3.4EG 9.0EPSS p100CRITICAL
- CVE-2015-7575EG 5.9MEDIUM
- CVE-2009-2409EG 5.1EPSS p91MEDIUM
- CVE-2013-0169EG 2.6EPSS p98LOW
- CVE-2014-1544EG 10.0EPSS p93HIGH
- CVE-2026-16389EG 9.8CRITICAL
- CVE-2026-2781EG 9.8CRITICAL
- CVE-2024-6602EG 9.8CRITICAL
Same vendor
8 shownredhat:RHSA-2016:0301 · redhat:RHSA-2016:0303 · redhat:RHSA-2016:1519
Same CWE
10 shownCWE-200 · CWE-310
- CVE-2016-0703EG 5.9EPSS p93MEDIUM
- CVE-2016-0704EG 5.9EPSS p94MEDIUM
- CVE-2016-0225EG 4.9MEDIUM
- CVE-2016-0702EG 5.1MEDIUM
- CVE-2016-0706EG 4.3EPSS p94MEDIUM
- CVE-2015-8805EG 9.8CRITICAL
- CVE-2015-8804EG 9.8EPSS p90CRITICAL
- CVE-2015-8803EG 9.8EPSS p91CRITICAL
- CVE-2016-0125EG 3.1EPSS p96LOW
- CVE-2016-0886EG 4.3MEDIUM
Frequently asked(5)
What is CVE-2016-0800?
When was CVE-2016-0800 made public?
Is CVE-2016-0800 actively exploited?
What is the CVSS score of CVE-2016-0800?
How do I remediate CVE-2016-0800?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2016-0800
Is Your Infrastructure Affected by CVE-2016-0800?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.