CVE-2026-48111

HIGHNVD 7.17.1
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 7.1 under NVD CVSS v3. EPSS exploit probability: 2.2% (82nd percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3
Elevated

Also known asEUVD-2026-34854 (ENISA EUVD)Source: ENISA EUVD

7.1EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 2.2%CVSS: 7.1Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

7-Zip is a file archiver with a high compression ratio. Versions 9.21 through 26.00 contain an off-by-one out-of-bounds read vulnerability in the ParseDepedencyExpression function of the UEFI firmware image parser(CPP/7zip/Archive/UefiHandler.cpp). The function validates an attacker-controlled opcode byte using > instead of >= against the element count of the 10-entry kExpressionCommands static array, allowing an opcode value of 10 to read one pointer slot (8 bytes on x64) past the end of the array in .rodata. The out-of-bounds value is then dereferenced as a const char * and passed through strlen and memcpy into the archive's Characts property, which may cause either a denial of service (access violation when the adjacent bytes do not form a valid readable pointer) or a minor information disclosure of an adjacent .rdata string literal into archive metadata. The vulnerability is reached automatically during IInArchive::Open() via the call path OpenFv/OpenCapsule → ParseVolume → ParseSections when processing a SECTION_DXE_DEPEX (0x13) or SECTION_PEI_DEPEX (0x1B) section whose first body byte is 0x0A, and the UEFI handler is enabled by default in stock 7z.dll with signature-based detection for both UEFIc and UEFIf formats. The outcome (crash vs. silent leak) is deterministic per build but linker-layout dependent, with no write primitive and no disclosure of heap data, secrets, or ASLR base addresses. Version 26.01 fixes the issue.

CVSS v3
7.1
EG Score
7.1HIGHmedium confidence
EG Risk
48
EG Risk 48/100

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)
Severity71% × 45%
Impact severity (EG Severity): CVSS 7.1 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
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 public PoC (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
2.2%
EPSS %ILE
82nd
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 (7.1): severity, escalated by confirmed exploitation. This CVE's 7.1 is its impact severity (EG Severity), not escalated.

EG Severity
7.1 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
2.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-27). 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: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: 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 public PoC (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.

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 5, 2026

Last Modified

June 8, 2026

Advisory Details (1)

Auto-updated Jun 12, 2026
Patch available. Sources: github.
GitHub advisory

GHSL-2026-115–GHSL-2026-122: Various memory access violations in 7-Zip | GitHub Security Lab

https://securitylab.github.com/advisories/GHSL-2026-115_GHSL-2026-122_7-zip/

Affected Packages

(7 across 5 ecosystems)
Debian:12(2)
PackageVulnerable rangeFix by version rangeDependents
7zip22.01+dfsg-10~exp1, 22.01+dfsg-8, 22.01+dfsg-8+deb12u1, 22.01+dfsg-9, 22.01+really25.01+dfsg-0+deb12u1
  • every version up to 22.01+really26.01+dfsg-0+deb12u1: fixed in 22.01+really26.01+dfsg-0+deb12u1
—
p7zip16.02+dfsg-8, 16.02+really25.01+dfsg-0+deb12u1
  • every version up to 16.02+really26.01+dfsg-0+deb12u1: fixed in 16.02+really26.01+dfsg-0+deb12u1
—
Debian:13(2)
PackageVulnerable rangeFix by version rangeDependents
7zip24.09+dfsg-8 ... 26.03+dfsg-3 (27 versions)
  • every version on: no fix on record
—
p7zip—
  • every version up to 16.02+transitional.1: fixed in 16.02+transitional.1
—
Alpine:v3.24(1)
PackageVulnerable rangeFix by version rangeDependents
7zip—
  • every version up to 26.01-r0: fixed in 26.01-r0
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
p7zip16.02+dfsg-8, 16.02+really25.01+dfsg-0+deb11u1
  • every version up to 16.02+really26.01+dfsg-0+deb11u1: fixed in 16.02+really26.01+dfsg-0+deb11u1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
7zip24.09+dfsg-8 ... 26.00+dfsg1-3 (18 versions)
  • every version up to 26.01+dfsg-1: fixed in 26.01+dfsg-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 36× 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.

Showing the most recent 100 of 177 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 77 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-30 16:34 UTCEPSS rescoreEPSS 2.2% · 82nd percentile
  2. 2026-10-29 16:33 UTCEPSS rescoreEPSS 2.2% · 82nd percentile
  3. 2026-10-28 16:32 UTCEPSS rescoreEPSS 2.2% · 82nd percentile
  4. 2026-10-27 23:53 UTCEG score recompute
  5. 2026-10-27 16:32 UTCEPSS rescoreEPSS 2.2% · 82nd percentile
  6. 2026-10-25 16:33 UTCEPSS rescoreEPSS 2.2% · 82nd percentile
  7. 2026-10-25 14:23 UTCEG score recompute
  8. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  9. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  10. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  11. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  12. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  13. 2026-10-20 09:46 UTCEG score recompute
  14. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  15. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  16. 2026-10-18 03:35 UTCEG score recompute
  17. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  18. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  19. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  20. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  21. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  22. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  23. 2026-10-12 15:44 UTCEG score recompute
  24. 2026-10-11 19:44 UTCEG score recompute
  25. 2026-10-11 16:58 UTCEG score recompute
Show 75 more
  1. 2026-10-11 14:23 UTCEG score recompute
  2. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  3. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  4. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  5. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  6. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  7. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  8. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  9. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  10. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  11. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  12. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  13. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  14. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  15. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  16. 2026-09-26 00:27 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  17. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  18. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  19. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  20. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  21. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  22. 2026-09-14 05:01 UTCEG score recompute
  23. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  24. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  25. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  26. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  27. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  28. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  29. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  30. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  31. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  32. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  33. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  34. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  35. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  36. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  37. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  38. 2026-08-25 01:57 UTCEG score recompute
  39. 2026-08-23 12:26 UTCEG score recompute
  40. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  41. 2026-08-22 01:40 UTCEG score recompute
  42. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  43. 2026-08-21 12:47 UTCEG score recompute
  44. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  45. 2026-08-20 09:40 UTCEG score recompute
  46. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  47. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  48. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  49. 2026-08-17 03:40 UTCEG score recompute
  50. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  51. 2026-08-16 14:45 UTCEG score recompute
  52. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  53. 2026-08-15 12:22 UTCEG score recompute
  54. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  55. 2026-08-14 04:01 UTCEG score recompute
  56. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  57. 2026-08-13 01:57 UTCEG score recompute
  58. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  59. 2026-08-11 23:33 UTCEG score recompute
  60. 2026-08-11 10:39 UTCEG score recompute
  61. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  62. 2026-08-09 14:33 UTCEG score recompute
  63. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  64. 2026-08-09 01:40 UTCEG score recompute
  65. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  66. 2026-08-07 23:54 UTCEG score recompute
  67. 2026-08-06 22:07 UTCEG score recompute
  68. 2026-08-06 13:47 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  69. 2026-08-05 20:19 UTCEG score recompute
  70. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  71. 2026-08-04 17:27 UTCEG score recompute
  72. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  73. 2026-08-04 10:39 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  74. 2026-08-03 15:25 UTCEG score recompute
  75. 2026-08-03 10:36 UTCEPSS rescoreEPSS 0.2% · 13th percentile

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Frequently asked(5)

What is CVE-2026-48111?
CVE-2026-48111 is a high-severity vulnerability; its CVE record was published on June 5, 2026. 7-Zip is a file archiver with a high compression ratio. Versions 9.21 through 26.00 contain an off-by-one out-of-bounds read vulnerability in the ParseDepedencyExpression function of the UEFI firmware image parser(CPP/7zip/Archive/UefiHandler.cpp). The function validates an attacker-controlled…
When was the CVE record for CVE-2026-48111 published?
The CVE record for CVE-2026-48111 was published on June 5, 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 June 8, 2026; the record at its source may have been updated since.
Is CVE-2026-48111 actively exploited?
CVE-2026-48111 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.2% probability of exploitation in the next 30 days (82nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-48111?
CVE-2026-48111 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2026-48111?
A fix for CVE-2026-48111 is available: update to the fixed version the vendor names in its advisory.

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