CVE-2026-48755

CRITICALPre-NVD 9.99.9—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.9 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 62% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
9.9EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.7%CVSS: 9.9Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Incus is a system container and virtual machine manager. Prior to version 7.1.0, improper validation of user-provided backup compression algorithm leads to argument injection in the constructed command line. This leads to an arbitrary file write on the host, possibly leading to arbitrary command execution. Version 7.1.0 patches the issue.

CVSS v3
9.9
EG Score
9.9CRITICALmedium confidence
EG Risk
45
EG Risk 45/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity99% × 45%
Exploitation0% × 40%
Automatability0% × 15%
EPSS PROB
0.7%
EPSS %ILE
52nd
KEV
Not listed

Published

June 26, 2026

Last Modified

September 18, 2026

Advisory Details (1)

Auto-updated Oct 2, 2026
🔬 Proof of concept available. Patch available. Sources: github.
githubMentions a patch (unverified)🟡 PoC Available

Argument injection in backup compression algorithm leading to AFW and ACE · Advisory · lxc/incus · GitHub

https://github.com/lxc/incus/security/advisories/GHSA-v6mj-8pf4-hhw4

Vendor Advisories for CVE-2026-48755(1)

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

Affected Packages

(8 across 4 ecosystems)
Go(4)
PackageVulnerable rangeFix by version rangeDependents
github.com/lxc/incus—
  • every version on: no fix on record
—
github.com/lxc/incus/v6—
  • every version on: no fix on record
—
github.com/lxc/incus/v7—
  • every version up to 7.2.0: fixed in 7.2.0
—
github.com/lxc/incus/v7/cmd/incusd—
  • every version up to 7.2.0: fixed in 7.2.0
—
Debian:13(2)
PackageVulnerable rangeFix by version rangeDependents
incus6.0.4-2 ... 6.0.4-2+deb13u7~bpo12+1 (15 versions)
  • every version up to 6.0.4-2+deb13u8: fixed in 6.0.4-2+deb13u8
—
lxd5.0.2+git20231211.1364ae4-9 ... 5.0.2+git20231211.1364ae4-9+deb13u6 (7 versions)
  • every version up to 5.0.2+git20231211.1364ae4-9+deb13u7: fixed in 5.0.2+git20231211.1364ae4-9+deb13u7
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
lxd5.0.2+git20231211.1364ae4-1 ... 5.0.2-6 (17 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
incus6.0.4-2 ... 7.0.0-5~bpo13+1 (28 versions)
  • every version up to 7.0.0-5: fixed in 7.0.0-5
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 24× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

  1. 2026-10-06 15:18 UTCEPSS rescore
  2. 2026-10-05 17:43 UTCEPSS rescore
  3. 2026-10-04 23:22 UTCEPSS rescore
  4. 2026-10-03 14:25 UTCEPSS rescore
  5. 2026-10-01 19:50 UTCEPSS rescore
  6. 2026-09-30 15:03 UTCEPSS rescore
  7. 2026-09-28 13:51 UTCEPSS rescore
  8. 2026-09-27 13:48 UTCEPSS rescore
  9. 2026-09-26 15:59 UTCEPSS rescore
  10. 2026-09-26 00:27 UTCEPSS rescore
  11. 2026-09-23 17:53 UTCEPSS rescore
  12. 2026-09-23 07:50 UTCEG score recompute
  13. 2026-09-20 20:16 UTCEPSS rescore
  14. 2026-09-18 20:36 UTCEG score recompute
  15. 2026-09-18 19:28 UTCEPSS rescore
  16. 2026-09-18 07:12 UTCEG score recompute
  17. 2026-09-16 14:08 UTCEPSS rescore
  18. 2026-09-16 05:15 UTCEPSS rescore
  19. 2026-09-14 01:10 UTCEG score recompute
  20. 2026-09-13 16:47 UTCEPSS rescore
  21. 2026-09-12 15:34 UTCEG score recompute
  22. 2026-09-11 14:53 UTCEPSS rescore
  23. 2026-09-10 09:35 UTCEPSS rescore
  24. 2026-09-08 22:01 UTCEPSS rescore
  25. 2026-09-07 16:01 UTCEPSS rescore
Show 25 more
  1. 2026-09-06 16:01 UTCEG score recompute
  2. 2026-09-06 13:47 UTCEPSS rescore
  3. 2026-09-04 05:06 UTCEPSS rescore
  4. 2026-09-02 14:12 UTCEPSS rescore
  5. 2026-09-01 13:54 UTCEPSS rescore
  6. 2026-09-01 04:40 UTCEPSS rescore
  7. 2026-08-30 19:21 UTCEG score recompute
  8. 2026-08-30 19:17 UTCEPSS rescore
  9. 2026-08-30 01:22 UTCEPSS rescore
  10. 2026-08-28 21:41 UTCEPSS rescore
  11. 2026-08-27 23:03 UTCEG score recompute
  12. 2026-08-27 14:25 UTCEPSS rescore
  13. 2026-08-26 14:46 UTCEPSS rescore
  14. 2026-08-25 13:49 UTCEPSS rescore
  15. 2026-08-24 21:48 UTCEG score recompute
  16. 2026-08-24 12:53 UTCEG score recompute
  17. 2026-08-23 01:06 UTCEG score recompute
  18. 2026-08-23 00:19 UTCEPSS rescore
  19. 2026-08-21 22:27 UTCEG score recompute
  20. 2026-08-21 21:54 UTCEG score recompute
  21. 2026-08-21 15:21 UTCEG score recompute
  22. 2026-07-30 13:22 UTCEG score recompute
  23. 2026-07-26 14:33 UTCEG score recompute
  24. 2026-07-23 03:18 UTCEG score recompute
  25. 2026-06-26 19:37 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-48755?
CVE-2026-48755 is a critical vulnerability published on June 26, 2026. Incus is a system container and virtual machine manager. Prior to version 7.1.0, improper validation of user-provided backup compression algorithm leads to argument injection in the constructed command line. This leads to an arbitrary file write on the host, possibly leading to arbitrary command…
When was CVE-2026-48755 disclosed?
CVE-2026-48755 was first published on June 26, 2026, with the most recent update on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-48755 actively exploited?
CVE-2026-48755 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.7% probability of exploitation in the next 30 days (52nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-48755?
CVE-2026-48755 has a CVSS base score of 9.9 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-48755?
A fix for CVE-2026-48755 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-48755 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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