CVE-2026-54697

MEDIUMPre-NVD 6.76.7
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This medium-severity CVE scores 6.7 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1% (2nd percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Trending — 3 sources updated this week

Also known asEUVD-2026-98839 (ENISA EUVD) · GHSA-vc8p-8pxg-rfwg (GitHub Security Advisories)Source: ENISA EUVD

6.7EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 6.7Exploit: None knownExposed services: Not assessed

The CVE record names the fixed release — apply it.

ConnectBot SSH Client Library is written in Kotlin with Kaitai Struct and KStateMachine. Prior to 0.3.1, DerReader.readLength() accepts excessive long-form DER length octets, accumulates them into an Int, and primitive readers allocate arrays without checking the declared size against the remaining input. An application or user that loads an attacker-provided private-key file through SshClient.authenticatePublicKey(), SshKeys.decodePemPrivateKey(), SshSigning.sign(), or SshSigning.getPublicKey() can trigger integer wraparound, excessive allocation, or an uncaught OutOfMemoryError. SSH server host keys and agent-forwarding messages do not use this application-supplied private-key input path. No usable weakened key and no confidentiality or integrity impact have been demonstrated. This issue is fixed in version 0.3.1.

CVSS v3
6.7
EG Score
6.7MEDIUMmedium confidence
EG Risk
30
EG Risk 30/100

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)
Severity67% × 45%
Impact severity (EG Severity): CVSS 6.7 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.1% × 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: The CVE record names the fixed release. Apply it within your standard update timelines.
EPSS PROB
0.1%
EPSS %ILE
2nd
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 (6.7): severity, escalated by confirmed exploitation. This CVE's 6.7 is its impact severity (EG Severity), not escalated.

EG Severity
6.7 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
0.1% 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 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.

The CVE record names the fixed release. 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

June 12, 2026

Last Modified

October 16, 2026

Advisory Details (2)

Auto-updated Oct 13, 2026
Fix named in the CVE record. Sources: github, github_commit.
GitHub commit

commit 2bb917517bec (connectbot/cbssh)

Fix landed in connectbot/cbssh commit 2bb917517bec — awaiting tagged release

https://github.com/connectbot/cbssh/commit/2bb917517bec0df229a02ca768d6eae84be72df0
GitHub advisoryMentions a patch (unverified)

Excessive allocation and integer overflow in DER private-key parsing · Advisory · connectbot/cbssh · GitHub

https://github.com/connectbot/cbssh/security/advisories/GHSA-vc8p-8pxg-rfwg

Vendor Advisories for CVE-2026-54697(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
mavenorg.connectbot.sshlib:sshlib—ghsa

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

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFix by version rangeDependents
org.connectbot.sshlib:sshlib0.1.2 ... 0.3.0 (6 versions)
  • every version through 0.3.0: no fix on record
—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 38× 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.

  1. 2026-11-02 16:45 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  2. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  3. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  4. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  5. 2026-10-29 16:34 UTCEG score recompute
  6. 2026-10-29 16:34 UTCGHSA enrichmentGHSA-vc8p-8pxg-rfwg
  7. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  8. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  9. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  10. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  11. 2026-10-25 14:19 UTCEG score recompute
  12. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  13. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  14. 2026-10-22 21:19 UTCEG score recompute
  15. 2026-10-22 21:19 UTCGHSA enrichmentGHSA-vc8p-8pxg-rfwg
  16. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  17. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  18. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  19. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  20. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  21. 2026-10-18 03:30 UTCEG score recompute
  22. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  23. 2026-10-16 20:12 UTCEG score recompute
  24. 2026-10-16 20:11 UTCGHSA enrichmentGHSA-vc8p-8pxg-rfwg
  25. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
Show 31 more
  1. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  2. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  3. 2026-10-13 17:28 UTCEG score recompute
  4. 2026-10-13 17:28 UTCGHSA enrichmentGHSA-vc8p-8pxg-rfwg
  5. 2026-10-13 16:24 UTCEG score recompute
  6. 2026-10-13 16:24 UTCGHSA enrichmentGHSA-vc8p-8pxg-rfwg
  7. 2026-10-13 16:01 UTCEG score recomputeFirst assessed: 6.7 MEDIUM
  8. 2026-10-13 16:01 UTCGHSA enrichmentGHSA-vc8p-8pxg-rfwg
  9. 2026-10-13 15:59 UTCMITRE cvelistV5CVSS v3 → 6.7 · CVSS v4 → 6.7
  10. 2026-10-12 15:56 UTCEG score recompute
  11. 2026-10-11 19:39 UTCEG score recompute
  12. 2026-10-11 16:54 UTCEG score recompute
  13. 2026-10-11 14:17 UTCEG score recompute
  14. 2026-09-14 03:57 UTCGHSA enrichmentGHSA-vc8p-8pxg-rfwg
  15. 2026-08-30 23:36 UTCGHSA enrichmentGHSA-vc8p-8pxg-rfwg
  16. 2026-08-23 09:59 UTCGHSA enrichmentGHSA-vc8p-8pxg-rfwg
  17. 2026-08-19 13:43 UTCGHSA enrichmentGHSA-vc8p-8pxg-rfwg
  18. 2026-08-14 21:13 UTCGHSA enrichmentGHSA-vc8p-8pxg-rfwg
  19. 2026-08-11 20:47 UTCGHSA enrichmentGHSA-vc8p-8pxg-rfwg
  20. 2026-08-08 20:21 UTCGHSA enrichmentGHSA-vc8p-8pxg-rfwg
  21. 2026-08-05 19:55 UTCGHSA enrichmentGHSA-vc8p-8pxg-rfwg
  22. 2026-08-02 06:37 UTCEG score recompute
  23. 2026-08-02 06:37 UTCGHSA enrichmentGHSA-vc8p-8pxg-rfwg
  24. 2026-07-30 06:08 UTCGHSA enrichmentGHSA-vc8p-8pxg-rfwg
  25. 2026-07-26 20:31 UTCEG score recompute
  26. 2026-07-26 20:31 UTCGHSA enrichmentGHSA-vc8p-8pxg-rfwg
  27. 2026-07-23 03:19 UTCEG score recompute
  28. 2026-07-14 18:42 UTCGHSA enrichmentGHSA-vc8p-8pxg-rfwg
  29. 2026-07-11 18:13 UTCGHSA enrichmentGHSA-vc8p-8pxg-rfwg
  30. 2026-07-08 17:45 UTCEG score recompute
  31. 2026-07-08 17:45 UTCGHSA enrichmentGHSA-vc8p-8pxg-rfwg

Related CVEs(same product + same CWE)

Same product

1 shown

Maven:org.connectbot.sshlib:sshlib

Frequently asked(5)

What is CVE-2026-54697?
CVE-2026-54697 is a medium-severity vulnerability; its CVE record was published on June 12, 2026. ConnectBot SSH Client Library is written in Kotlin with Kaitai Struct and KStateMachine. Prior to 0.3.1, DerReader.readLength() accepts excessive long-form DER length octets, accumulates them into an Int, and primitive readers allocate arrays without checking the declared size against the remaining…
When was the CVE record for CVE-2026-54697 published?
The CVE record for CVE-2026-54697 was published on June 12, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 16, 2026; the record at its source may have been updated since.
Is CVE-2026-54697 actively exploited?
CVE-2026-54697 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (2nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-54697?
CVE-2026-54697 has a CVSS base score of 6.7 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-54697?
The CVE record for CVE-2026-54697 names the fix: "This issue is fixed in version 0.3.1." The vendor advisories EchelonGraph has for CVE-2026-54697 are linked in the Vendor Advisories panel on this page.

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