Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, an authenticated attacker may crash Asterisk through a buffer over-read in the PJSIP MWI body parser by sending a carefully crafted SIP NOTIFY request. The attacker must pass SIP authentication using either a username/password or source IP address matching. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3.
CVE-2026-57185
“—” beside the score: it is equal to the CVSS score beside it.
This medium-severity CVE scores 6.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5% (41st percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.
Also known asEUVD-2026-111103 (ENISA EUVD)Source: ENISA EUVD
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v3
- 6.5
- EG Score
- 6.5MEDIUMmedium confidence
- EG Risk
- 29EG Risk 29/100
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.Exploitation0.5% × 40%FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.Automatability0% × 15%CISA's SSVC Automatable value: no (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (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. - EPSS PROB
- 0.5%
- EPSS %ILE
- 41st
- 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 (6.5): severity, escalated by confirmed exploitation. This CVE's 6.5 is its impact severity (EG Severity), not escalated.
- EG Severity
- 6.5 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
- EG Likelihood
- 0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-30). 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 every mission impact level.CISA BOD 26-04: 60 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 every mission impact level.
A fix is available. Apply it within your standard update timelines.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (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)60 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 Vulnrichment) · Technical impact partial (CISA Vulnrichment). 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
October 27, 2026
Last Modified
October 30, 2026
Advisory Details (10)
Auto-updated Oct 28, 2026Asterisk Release 22.10.1
Patch available: asterisk/asterisk 22.10.1
https://github.com/asterisk/asterisk/releases/tag/22.10.1Asterisk Release 21.12.3
Patch available: asterisk/asterisk 21.12.3
https://github.com/asterisk/asterisk/releases/tag/21.12.3Asterisk Release 20.20.1
Patch available: asterisk/asterisk 20.20.1
https://github.com/asterisk/asterisk/releases/tag/20.20.1commit dafff9fb6028 (asterisk/asterisk)
Fix landed in asterisk/asterisk commit dafff9fb6028 — awaiting tagged release
https://github.com/asterisk/asterisk/commit/dafff9fb60281817225f1ce6371a5aa2fbb967a4commit 919f2ffda033 (asterisk/asterisk)
Fix landed in asterisk/asterisk commit 919f2ffda033 — awaiting tagged release
https://github.com/asterisk/asterisk/commit/919f2ffda03329c9014bedcb3c7789d38660c9edcommit 57ce484a45b0 (asterisk/asterisk)
Fix landed in asterisk/asterisk commit 57ce484a45b0 — awaiting tagged release
https://github.com/asterisk/asterisk/commit/57ce484a45b098de417f19265c95c64497782e36commit 3100a0d331af (asterisk/asterisk)
Fix landed in asterisk/asterisk commit 3100a0d331af — awaiting tagged release
https://github.com/asterisk/asterisk/commit/3100a0d331affbf0995b8c57aaddb31cf3971f6ecommit 1b2d99d8eb92 (asterisk/asterisk)
Fix landed in asterisk/asterisk commit 1b2d99d8eb92 — awaiting tagged release
https://github.com/asterisk/asterisk/commit/1b2d99d8eb9206d37fd47115996f67fd28bd056fcommit 1039bed76fa3 (asterisk/asterisk)
Fix landed in asterisk/asterisk commit 1039bed76fa3 — awaiting tagged release
https://github.com/asterisk/asterisk/commit/1039bed76fa3248f58b6880e4b3f1421ef98b01fcommit 07aec894a1fd (asterisk/asterisk)
Fix landed in asterisk/asterisk commit 07aec894a1fd — awaiting tagged release
https://github.com/asterisk/asterisk/commit/07aec894a1fdfa7fa989d3ab40fdf0dcda8005bbWeakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 11× in last 7d / 11× 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.
- 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-10-30 21:26 UTCEG score recompute
- 2026-10-30 20:29 UTCEG score recompute
- 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-10-27 17:26 UTCEG score recompute
- 2026-10-27 17:01 UTCENISA EUVD ID recordedEUVD-2026-111103 · Source: ENISA EUVD
- 2026-10-27 16:50 UTCEG score recomputeFirst assessed: 6.5 MEDIUM
- 2026-10-27 16:49 UTCMITRE cvelistV5first tracked
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Frequently asked(5)
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