An issue was discovered in Asterisk through 13.19.1, 14.x through 14.7.5, and 15.x through 15.2.1, and Certified Asterisk through 13.18-cert2. res_pjsip allows remote authenticated users to crash Asterisk (segmentation fault) by sending a number of SIP INVITE messages on a TCP or TLS connection and then suddenly closing the connection.
CVE-2018-7286
“▲” beside the score: it is higher than NVD's CVSS score.
Score elevated to 7.5 because EPSS predicted 53% probability of exploitation within the next 30 days (98th percentile of EPSS-scored CVEs) when EchelonGraph scored this CVE. NVD baseline CVSS 6.5 retained for reference. Confidence: see factors.
- High exploitation likelihood — EPSS 53%
- Public exploit code is available (Exploit-DB, marked verified by Exploit-DB)
A fix is available — apply it.
- CVSS v3
- 6.5
- EG Score
- 7.5HIGHhigh confidence
- EG Risk
- 55EG Risk 55/100
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)Severity65% × 45%Impact severity (EG Severity): CVSS 6.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation65% × 40%EchelonGraph's fixed weight for EG-KEV Tier 2 (Weaponized): a constant, not a probability.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
- 53%
- EPSS %ILE
- 98th
- 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 (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is EPSS's lift toward 9.0 from its impact severity (EG Severity, CVSS 6.5 MEDIUM): a likelihood of exploitation, not impact.
- EG Severity
- 6.5 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
- EG Likelihood
- 53% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-17). 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: 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.
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
February 22, 2018
Last Modified
November 21, 2024
References (6)
- MITRE · CVE Programhttp://downloads.asterisk.org/pub/security/AST-2018-005.htmlVendor Advisory
- MITRE · CVE Programhttp://www.securityfocus.com/bid/103129 (archived copy: the site no longer serves it)Third Party Advisory · VDB Entry
- MITRE · CVE Programhttp://www.securitytracker.com/id/1040417Third Party Advisory · VDB Entry
- MITRE · CVE Programhttps://issues.asterisk.org/jira/browse/ASTERISK-27618Vendor Advisory
- MITRE · CVE Programhttps://www.debian.org/security/2018/dsa-4320Third Party Advisory
- MITRE · CVE Programhttps://www.exploit-db.com/exploits/44181/Exploit · Third Party Advisory · VDB Entry
Affected Packages
(3 across 3 ecosystems)
Debian:11(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| asterisk | — |
| — |
Debian:14(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| asterisk | 0.1.11-3 ... 1:13.9.1~dfsg-2 (219 versions) |
| — |
Debian:9(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| asterisk | 1:13.14.1~dfsg-2, 1:13.14.1~dfsg-2+deb9u1, 1:13.14.1~dfsg-2+deb9u2, 1:13.14.1~dfsg-2+deb9u3 |
| — |
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 91 of 146 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. 9 repeat rows among the latest 100 are merged into the row they repeat. The 55 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-10-22 11:55 UTCOSV refresh
- 2026-10-21 16:27 UTCEPSS rescoreEPSS 53% · 98th percentile
- 2026-10-20 16:27 UTCEPSS rescoreEPSS 53% · 98th percentile
- 2026-10-19 16:27 UTCEPSS rescoreEPSS 53% · 98th percentile
- 2026-10-18 16:27 UTCEPSS rescoreEPSS 53% · 98th percentile
- 2026-10-18 10:01 UTCEG score recompute
- 2026-10-16 16:30 UTCEPSS rescoreEPSS 53% · 98th percentile
- 2026-10-15 16:27 UTCEPSS rescoreEPSS 53% · 98th percentile
- 2026-10-14 16:27 UTCEPSS rescoreEPSS 53% · 98th percentile
- 2026-10-13 16:27 UTCEPSS rescoreEPSS 53% · 98th percentile
- 2026-10-12 20:08 UTCEG score recompute
- 2026-10-12 00:32 UTCEG score recompute
- 2026-10-11 13:41 UTCEPSS rescoreEPSS 53% · 98th percentile
- 2026-10-10 19:55 UTCEPSS rescoreEPSS 53% · 98th percentile
- 2026-10-09 20:03 UTCEPSS rescoreEPSS 53% · 98th percentile
- 2026-10-08 16:37 UTCEPSS rescoreEPSS 53% · 98th percentile
- 2026-10-07 23:42 UTCEPSS rescoreEPSS 53% · 98th percentile
- 2026-10-06 15:12 UTCEPSS rescoreEPSS 53% · 98th percentile
- 2026-10-03 14:21 UTCEPSS rescoreEPSS 53% · 98th percentile
- 2026-10-01 19:44 UTCEPSS rescoreEPSS 53% · 98th percentile
- 2026-09-30 14:59 UTCEPSS rescoreEPSS 53% · 98th percentile
- 2026-09-30 10:04 UTCEG score recompute▲ 0.60
- 2026-09-29 09:22 UTCOSV refresh
- 2026-09-28 13:46 UTCEPSS rescoreEPSS 53% · 98th percentile
- 2026-09-27 13:40 UTCEPSS rescoreEPSS 38% · 98th percentile
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- 2026-09-26 15:53 UTCEPSS rescoreEPSS 38% · 98th percentile
- 2026-09-24 13:59 UTCEPSS rescoreEPSS 38% · 98th percentile
- 2026-09-23 13:42 UTCEPSS rescoreEPSS 38% · 98th percentile
- 2026-09-21 20:27 UTCEPSS rescoreEPSS 32% · 98th percentile
- 2026-09-20 20:10 UTCEPSS rescoreEPSS 38% · 98th percentile
- 2026-09-19 15:36 UTCEPSS rescoreEPSS 38% · 98th percentile
- 2026-09-18 19:22 UTCEPSS rescoreEPSS 38% · 98th percentile
- 2026-09-17 19:22 UTCEPSS rescoreEPSS 38% · 98th percentile
- 2026-09-15 03:05 UTCEPSS rescoreEPSS 38% · 98th percentile
- 2026-09-11 14:48 UTCEPSS rescoreEPSS 38% · 98th percentile
- 2026-09-11 09:32 UTCEPSS rescoreEPSS 38% · 98th percentile
- 2026-09-09 16:53 UTCOSV refresh
- 2026-09-06 13:44 UTCEPSS rescoreEPSS 38% · 98th percentile
- 2026-09-04 13:56 UTCEPSS rescoreEPSS 38% · 98th percentile
- 2026-09-04 05:02 UTCEPSS rescoreEPSS 38% · 98th percentile
- 2026-09-02 14:07 UTCEPSS rescoreEPSS 38% · 98th percentile
- 2026-09-01 03:32 UTCEPSS rescoreEPSS 38% · 98th percentile
- 2026-08-30 19:13 UTCEPSS rescoreEPSS 38% · 98th percentile
- 2026-08-30 01:18 UTCEPSS rescoreEPSS 32% · 98th percentile
- 2026-08-28 21:36 UTCEPSS rescoreEPSS 32% · 98th percentile
- 2026-08-27 14:21 UTCEPSS rescoreEPSS 38% · 98th percentile
- 2026-08-26 14:42 UTCEPSS rescoreEPSS 38% · 98th percentile
- 2026-08-25 13:45 UTCEPSS rescoreEPSS 38% · 98th percentile
- 2026-08-24 14:11 UTCEPSS rescoreEPSS 38% · 98th percentile
- 2026-08-22 22:07 UTCOSV refresh
- 2026-08-21 23:45 UTCEPSS rescoreEPSS 38% · 98th percentile
- 2026-08-20 22:51 UTCEPSS rescoreEPSS 38% · 98th percentile
- 2026-08-19 17:00 UTCEPSS rescoreEPSS 38% · 98th percentile
- 2026-08-17 13:43 UTCEPSS rescoreEPSS 38% · 98th percentile
- 2026-08-16 14:52 UTCEPSS rescoreEPSS 38% · 98th percentile
- 2026-08-16 02:10 UTCEPSS rescoreEPSS 38% · 98th percentile
- 2026-08-15 01:26 UTCEPSS rescoreEPSS 38% · 98th percentile
- 2026-08-13 21:56 UTCEPSS rescoreEPSS 38% · 98th percentile
- 2026-08-12 13:47 UTCEPSS rescoreEPSS 38% · 98th percentile
- 2026-08-09 13:43 UTCEPSS rescoreEPSS 38% · 98th percentile
- 2026-08-07 16:23 UTCEPSS rescoreEPSS 38% · 98th percentile
- 2026-08-07 01:39 UTCOSV refresh
- 2026-08-06 13:42 UTCEPSS rescoreEPSS 38% · 98th percentile
- 2026-08-04 15:05 UTCEPSS rescoreEPSS 38% · 98th percentile
- 2026-08-04 10:33 UTCEPSS rescoreEPSS 38% · 98th percentile
- 2026-08-01 04:12 UTCEPSS rescoreEPSS 39% · 98th percentile
- 2026-07-30 16:24 UTCEPSS rescoreEPSS 39% · 98th percentile
- 2026-07-28 15:32 UTCEPSS rescoreEPSS 39% · 98th percentile
- 2026-07-27 14:05 UTCEPSS rescoreEPSS 39% · 98th percentile
- 2026-07-26 14:51 UTCEPSS rescoreEPSS 39% · 98th percentile
- 2026-07-25 14:14 UTCEPSS rescoreEPSS 39% · 98th percentile
- 2026-07-24 14:14 UTCEPSS rescoreEPSS 39% · 98th percentile
- 2026-07-23 14:15 UTCEPSS rescoreEPSS 39% · 98th percentile
- 2026-07-23 01:37 UTCEG score recompute▲ 0.40
- 2026-07-22 22:17 UTCEG score recompute
- 2026-07-22 14:05 UTCEPSS rescoreEPSS 39% · 98th percentile
- 2026-07-21 17:18 UTCOSV refresh
- 2026-07-21 15:22 UTCEPSS rescoreEPSS 39% · 98th percentile
- 2026-07-20 17:04 UTCEPSS rescoreEPSS 39% · 98th percentile
- 2026-07-19 14:28 UTCEPSS rescoreEPSS 39% · 98th percentile
- 2026-07-19 02:26 UTCEPSS rescoreEPSS 39% · 98th percentile
- 2026-07-16 16:59 UTCEPSS rescoreEPSS 39% · 98th percentile
- 2026-07-15 16:55 UTCEPSS rescoreEPSS 39% · 98th percentile
- 2026-07-15 01:56 UTCEPSS rescoreEPSS 39% · 98th percentile
- 2026-07-13 22:27 UTCEPSS rescoreEPSS 39% · 98th percentile
- 2026-07-13 06:10 UTCEPSS rescoreEPSS 39% · 98th percentile
- 2026-07-12 05:43 UTCEPSS rescoreEPSS 39% · 98th percentile
- 2026-07-09 19:06 UTCEPSS rescoreEPSS 39% · 98th percentile
- 2026-07-06 16:24 UTCEPSS rescoreEPSS 39% · 98th percentile
- 2026-07-04 12:56 UTCOSV refresh
- 2026-07-04 06:28 UTCEPSS rescoreEPSS 39% · 98th percentile
Publicly available exploits
(1 reference)Public exploit code is referenced for this CVE (1 Exploit-DB entry). Defenders should treat patch urgency accordingly.
- Exploit-DBEDB-44181✓ verifiedPublished Feb 27, 2018
Asterisk chan_pjsip 15.2.0 - 'INVITE' Denial of Service
Open source ↗
Related CVEs(same product)
Same product
10 shownDebian:9:asterisk
- CVE-2017-14100EG 9.8EPSS p97CRITICAL
- CVE-2019-18610EG 8.9EPSS p99HIGH
- CVE-2017-17090NVD 7.5EG 8.9EPSS p100HIGH
- CVE-2018-7284NVD 7.5EG 8.5EPSS p99HIGH
- CVE-2018-17281NVD 7.5EG 8.1EPSS p99HIGH
- CVE-2021-32558EG 7.5EPSS p95HIGH
- CVE-2019-18976EG 7.5EPSS p96HIGH
- CVE-2017-14603EG 7.5HIGH
- CVE-2017-14099EG 7.5EPSS p91HIGH
- CVE-2020-28242EG 6.5MEDIUM
Frequently asked(5)
What is CVE-2018-7286?
When was CVE-2018-7286 made public?
Is CVE-2018-7286 actively exploited?
What is the CVSS score of CVE-2018-7286?
How do I remediate CVE-2018-7286?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2018-7286
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