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, the LDAP realtime driver res_config_ldap may permit LDAP filter injection through a SIP username, allowing an unauthenticated attacker to make arbitrary LDAP queries using carefully crafted SIP packets and disclose information. The res_config_ldap module must be loaded and configured to access an LDAP server, which is not the default. 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-2026-57193
“—” beside the score: it is equal to the CVSS score beside it.
This medium-severity CVE scores 6.9 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 2.0% (80th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.
Also known asEUVD-2026-110081 (ENISA EUVD)Source: ENISA EUVD
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v3
- 6.9
- EG Score
- 6.9MEDIUMmedium confidence
- EG Risk
- 47EG Risk 47/100
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)Severity69% × 45%Impact severity (EG Severity): CVSS 6.9 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation2.0% × 40%FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.Automatability100% × 15%CISA's SSVC Automatable value: yes (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).Exploitation none (CISA Vulnrichment) · Automatable yes (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 at low or medium mission impact and sooner than that at high. - EPSS PROB
- 2.0%
- EPSS %ILE
- 80th
- 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 (6.9): severity, escalated by confirmed exploitation. This CVE's 6.9 is its impact severity (EG Severity), not escalated.
- EG Severity
- 6.9 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
- 2.0% 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 low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days 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; Attend at high (mission-essential systems).
A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
Exploitation none (CISA Vulnrichment) · Automatable yes (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)14 days if the affected system is publicly exposed; 60 days if it is not.
The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (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 26, 2026
Last Modified
October 31, 2026
Advisory Details (10)
Auto-updated Oct 26, 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 ef280572a034 (asterisk/asterisk)
Fix landed in asterisk/asterisk commit ef280572a034 — awaiting tagged release
https://github.com/asterisk/asterisk/commit/ef280572a034cac3994075298facb1999778ee0dcommit dd0c768d9e96 (asterisk/asterisk)
Fix landed in asterisk/asterisk commit dd0c768d9e96 — awaiting tagged release
https://github.com/asterisk/asterisk/commit/dd0c768d9e9678e4cb1ed95689a254a61452239bcommit 8170a6bfa759 (asterisk/asterisk)
Fix landed in asterisk/asterisk commit 8170a6bfa759 — awaiting tagged release
https://github.com/asterisk/asterisk/commit/8170a6bfa75994e7617a8b9d7fe7a7140b70cbe2commit 7e1ae09594a1 (asterisk/asterisk)
Fix landed in asterisk/asterisk commit 7e1ae09594a1 — awaiting tagged release
https://github.com/asterisk/asterisk/commit/7e1ae09594a101950398cc6aff2dd2e5ab314884commit 23c01b6d359c (asterisk/asterisk)
Fix landed in asterisk/asterisk commit 23c01b6d359c — awaiting tagged release
https://github.com/asterisk/asterisk/commit/23c01b6d359c5d85da725beea89e394a6c031c5dcommit 14968f2f440e (asterisk/asterisk)
Fix landed in asterisk/asterisk commit 14968f2f440e — awaiting tagged release
https://github.com/asterisk/asterisk/commit/14968f2f440ea0dd983caa4f477237a5224904ddcommit 04aa482212e4 (asterisk/asterisk)
Fix landed in asterisk/asterisk commit 04aa482212e4 — awaiting tagged release
https://github.com/asterisk/asterisk/commit/04aa482212e43b292817444eb4de35499f4b1568LDAP Filter Injection in res_config_ldap via SIP Username (Unauthenticated Information Disclosure) · Advisory · asterisk/asterisk · GitHub
https://github.com/asterisk/asterisk/security/advisories/GHSA-r6c2-hwc2-j4mpWeakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 9× in last 7d / 13× 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.
- 2026-11-02 16:45 UTCEPSS rescoreEPSS 2.0% · 80th percentile
- 2026-11-01 16:34 UTCEPSS rescoreEPSS 2.0% · 80th percentile
- 2026-10-31 16:33 UTCEPSS rescoreEPSS 2.0% · 80th percentile
- 2026-10-31 02:27 UTCEG score recompute
- 2026-10-31 01:54 UTCEG score recompute
- 2026-10-30 16:34 UTCEPSS rescoreEPSS 2.0% · 80th percentile
- 2026-10-29 16:33 UTCEPSS rescoreEPSS 2.0% · 80th percentile
- 2026-10-28 16:32 UTCEPSS rescoreEPSS 2.0% · 80th percentile
- 2026-10-27 16:32 UTCEPSS rescoreEPSS 2.0% · 80th percentile
- 2026-10-26 20:33 UTCEG score recompute
- 2026-10-26 20:01 UTCENISA EUVD ID recordedEUVD-2026-110081 · Source: ENISA EUVD
- 2026-10-26 19:50 UTCEG score recomputeFirst assessed: 6.9 MEDIUM
- 2026-10-26 19:50 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Frequently asked(5)
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Dependency Blast Radius
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