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 Asterisk REST Interface (ARI) attacker with read-only privileges may use setChannelVar to execute write dialplan functions, including FILE() writes, even when live_dangerously in asterisk.conf is set to no. The Asterisk HTTP web server must be enabled and reachable, and the attacker must already have valid read-only ARI credentials. HTTP is disabled by default and binds only to 127.0.0.1 by default even when enabled. 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-2026-57202
“—” beside the score: it is equal to the CVSS score beside it.
This high-severity CVE scores 8.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (38th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.
Also known asEUVD-2026-111345 (ENISA EUVD)Source: ENISA EUVD
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 8.1
- EG Score
- 8.1HIGHmedium confidence
- EG Risk
- 37EG Risk 37/100
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)Severity81% × 45%Impact severity (EG Severity): CVSS 8.1 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation0.4% × 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 low or medium mission impact; Track* at high (mission-essential systems).Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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
- 0.4%
- EPSS %ILE
- 38th
- 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 (8.1): severity, escalated by confirmed exploitation. This CVE's 8.1 is its impact severity (EG Severity), not escalated.
- EG Severity
- 8.1 HIGHCVSS-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
- 0.4% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-28). 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 or medium mission impact; Track* at high (mission-essential systems).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 or medium mission impact; Track* at high (mission-essential systems).
A fix is available. Apply it within your standard update timelines.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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)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 Vulnrichment) · Technical impact total (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 28, 2026
Advisory Details (10)
Auto-updated Oct 27, 2026Asterisk 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 d8614505b276 (asterisk/asterisk)
Fix landed in asterisk/asterisk commit d8614505b276 — awaiting tagged release
https://github.com/asterisk/asterisk/commit/d8614505b27688dec3a1d14554f52fda94712928commit d47b0b6e5a38 (asterisk/asterisk)
Fix landed in asterisk/asterisk commit d47b0b6e5a38 — awaiting tagged release
https://github.com/asterisk/asterisk/commit/d47b0b6e5a384746db194f751b53d559aba8dba9commit caa4d50d9c3b (asterisk/asterisk)
Fix landed in asterisk/asterisk commit caa4d50d9c3b — awaiting tagged release
https://github.com/asterisk/asterisk/commit/caa4d50d9c3bf04fc979b5b2cdc5dc425772d845commit bf9354267557 (asterisk/asterisk)
Fix landed in asterisk/asterisk commit bf9354267557 — awaiting tagged release
https://github.com/asterisk/asterisk/commit/bf9354267557ef6d6b75f5304faa243f595a5a66commit ba04e7f1f988 (asterisk/asterisk)
Fix landed in asterisk/asterisk commit ba04e7f1f988 — awaiting tagged release
https://github.com/asterisk/asterisk/commit/ba04e7f1f98887c3c6e0dc4ddce663021f7e948acommit 92a5dd1003b7 (asterisk/asterisk)
Fix landed in asterisk/asterisk commit 92a5dd1003b7 — awaiting tagged release
https://github.com/asterisk/asterisk/commit/92a5dd1003b737ae1cd2df4e60b73beb8d5e42bbcommit 8f8ccaf70a80 (asterisk/asterisk)
Fix landed in asterisk/asterisk commit 8f8ccaf70a80 — awaiting tagged release
https://github.com/asterisk/asterisk/commit/8f8ccaf70a80e518147b0c35c0c252de4735446fARI setChannelVar bypasses live_dangerously and permits FILE() writes · Advisory · asterisk/asterisk · GitHub
https://github.com/asterisk/asterisk/security/advisories/GHSA-vrfp-mg3q-3959Weakness 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 0.4% · 38th percentile
- 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.4% · 38th percentile
- 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.4% · 38th percentile
- 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.4% · 38th percentile
- 2026-10-28 17:26 UTCEG score recompute
- 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.4% · 38th percentile
- 2026-10-28 16:25 UTCEG score recompute
- 2026-10-27 19:01 UTCENISA EUVD ID recordedEUVD-2026-111345 · Source: ENISA EUVD
- 2026-10-27 18:27 UTCEG score recompute
- 2026-10-27 18:06 UTCEG score recomputeFirst assessed: 8.1 HIGH
- 2026-10-27 18:04 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Frequently asked(5)
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