CVE-2026-25512

HIGHNVD 8.88.8
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 20% (97th 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-2026-5349 (ENISA EUVD)Source: ENISA EUVD

8.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (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: 20%CVSS: 8.8Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.150, 25.0.82, and 26.0.5, there is a remote code execution (RCE) vulnerability in Group-Office. The endpoint email/message/tnefAttachmentFromTempFile directly concatenates the user-controlled parameter tmp_file into an exec() call. By injecting shell metacharacters into tmp_file, an authenticated attacker can execute arbitrary system commands on the server. This issue has been patched in versions 6.8.150, 25.0.82, and 26.0.5.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
71
EG Risk 71/100

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)
Severity88% × 45%
Impact severity (EG Severity): CVSS 8.8 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.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (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 at low or medium mission impact and sooner than that at high.
EPSS PROB
20%
EPSS %ILE
97th
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 (8.8): severity, escalated by confirmed exploitation. This CVE's 8.8 is its impact severity (EG Severity), not escalated.

EG Severity
8.8 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
20% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-01). 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, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 3 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, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (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)3 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 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

February 4, 2026

Last Modified

June 17, 2026

Advisory Details (2)

Auto-updated Aug 2, 2026
Patch available. Sources: github_commit, github.
GitHub advisoryMentions a patch (unverified)

RCE - Command Injection via TNEF Attachment Handler · Advisory · Intermesh/groupoffice · GitHub

https://github.com/Intermesh/groupoffice/security/advisories/GHSA-579w-jvg7-frr4
GitHub commit Patch Available

commit 6c612deca97a (Intermesh/groupoffice)

Patch available: Intermesh/groupoffice v26.0.27 (contains commit 6c612deca97a)

http://github.com/Intermesh/groupoffice/commit/6c612deca97a6cd2a1bd4feea0ce7e8e9d907792

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 37× 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 97 of 186 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. 3 repeat rows among the latest 100 are merged into the row they repeat. The 89 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-01 18:06 UTCEG score recompute
  2. 2026-10-31 16:32 UTCEPSS rescoreEPSS 20% · 97th percentile
  3. 2026-10-30 16:34 UTCEPSS rescoreEPSS 20% · 97th percentile
  4. 2026-10-29 16:33 UTCEPSS rescoreEPSS 20% · 97th percentile
  5. 2026-10-28 16:31 UTCEPSS rescoreEPSS 20% · 97th percentile
  6. 2026-10-27 16:31 UTCEPSS rescoreEPSS 20% · 97th percentile
  7. 2026-10-26 16:31 UTCEPSS rescoreEPSS 20% · 97th percentile
  8. 2026-10-25 16:32 UTCEPSS rescoreEPSS 20% · 97th percentile
  9. 2026-10-25 14:40 UTCEG score recompute
  10. 2026-10-25 05:26 UTCEG score recompute
  11. 2026-10-24 16:32 UTCEPSS rescoreEPSS 3.8% · 90th percentile
  12. 2026-10-23 16:31 UTCEPSS rescoreEPSS 3.8% · 90th percentile
  13. 2026-10-22 16:34 UTCEPSS rescoreEPSS 3.8% · 90th percentile
  14. 2026-10-21 16:32 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  15. 2026-10-20 16:32 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  16. 2026-10-19 16:31 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  17. 2026-10-18 16:31 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  18. 2026-10-18 03:52 UTCEG score recompute
  19. 2026-10-17 16:45 UTCEG score recompute
  20. 2026-10-17 16:33 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  21. 2026-10-16 16:41 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  22. 2026-10-15 16:31 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  23. 2026-10-14 16:32 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  24. 2026-10-13 16:33 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  25. 2026-10-12 16:33 UTCEPSS rescoreEPSS 3.8% · 89th percentile
Show 72 more
  1. 2026-10-12 16:19 UTCEG score recompute
  2. 2026-10-11 20:01 UTCEG score recompute
  3. 2026-10-11 17:14 UTCEG score recompute
  4. 2026-10-11 14:46 UTCEG score recompute
  5. 2026-10-11 13:48 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  6. 2026-10-10 20:00 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  7. 2026-10-09 20:07 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  8. 2026-10-09 12:25 UTCOSV refresh
  9. 2026-10-08 17:11 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  10. 2026-10-07 23:47 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  11. 2026-10-06 15:17 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  12. 2026-10-05 17:42 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  13. 2026-10-03 14:25 UTCEPSS rescoreEPSS 3.8% · 89th percentile
  14. 2026-10-01 19:49 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  15. 2026-09-30 15:03 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  16. 2026-09-28 13:51 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  17. 2026-09-26 15:58 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  18. 2026-09-26 00:26 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  19. 2026-09-24 14:03 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  20. 2026-09-20 20:15 UTCEPSS rescoreEPSS 19% · 97th percentile
  21. 2026-09-19 19:33 UTCOSV refresh
  22. 2026-09-18 19:27 UTCEPSS rescoreEPSS 19% · 97th percentile
  23. 2026-09-16 14:07 UTCEPSS rescoreEPSS 19% · 97th percentile
  24. 2026-09-16 05:15 UTCEPSS rescoreEPSS 19% · 97th percentile
  25. 2026-09-12 15:01 UTCEPSS rescoreEPSS 19% · 97th percentile
  26. 2026-09-11 14:52 UTCEPSS rescoreEPSS 19% · 97th percentile
  27. 2026-09-10 09:34 UTCEPSS rescoreEPSS 19% · 97th percentile
  28. 2026-09-08 22:00 UTCEPSS rescoreEPSS 19% · 97th percentile
  29. 2026-09-06 13:47 UTCEPSS rescoreEPSS 19% · 97th percentile
  30. 2026-09-04 05:06 UTCEPSS rescoreEPSS 19% · 97th percentile
  31. 2026-09-02 14:11 UTCEPSS rescoreEPSS 19% · 97th percentile
  32. 2026-09-01 13:53 UTCEPSS rescoreEPSS 19% · 97th percentile
  33. 2026-09-01 04:39 UTCEPSS rescoreEPSS 19% · 97th percentile
  34. 2026-08-31 23:04 UTCOSV refresh
  35. 2026-08-30 19:17 UTCEPSS rescoreEPSS 19% · 97th percentile
  36. 2026-08-30 01:22 UTCEPSS rescoreEPSS 19% · 97th percentile
  37. 2026-08-28 21:41 UTCEPSS rescoreEPSS 19% · 97th percentile
  38. 2026-08-27 14:25 UTCEPSS rescoreEPSS 19% · 97th percentile
  39. 2026-08-26 14:46 UTCEPSS rescoreEPSS 19% · 97th percentile
  40. 2026-08-25 13:48 UTCEPSS rescoreEPSS 19% · 97th percentile
  41. 2026-08-21 23:49 UTCEPSS rescoreEPSS 19% · 97th percentile
  42. 2026-08-20 22:55 UTCEPSS rescoreEPSS 19% · 97th percentile
  43. 2026-08-19 17:03 UTCEPSS rescoreEPSS 19% · 97th percentile
  44. 2026-08-18 13:48 UTCEPSS rescoreEPSS 19% · 97th percentile
  45. 2026-08-16 14:56 UTCEPSS rescoreEPSS 19% · 97th percentile
  46. 2026-08-16 02:14 UTCEPSS rescoreEPSS 19% · 96th percentile
  47. 2026-08-15 01:30 UTCEPSS rescoreEPSS 19% · 96th percentile
  48. 2026-08-14 11:10 UTCEG score recompute
  49. 2026-08-13 22:00 UTCEPSS rescoreEPSS 19% · 96th percentile
  50. 2026-08-13 03:30 UTCEG score recompute
  51. 2026-08-12 13:50 UTCEPSS rescoreEPSS 19% · 96th percentile
  52. 2026-08-11 13:42 UTCEPSS rescoreEPSS 19% · 96th percentile
  53. 2026-08-11 00:00 UTCEPSS rescoreEPSS 19% · 96th percentile
  54. 2026-08-09 15:50 UTCEG score recompute
  55. 2026-08-09 13:46 UTCEPSS rescoreEPSS 19% · 96th percentile
  56. 2026-08-08 16:37 UTCEPSS rescoreEPSS 19% · 96th percentile
  57. 2026-08-07 22:45 UTCEG score recompute
  58. 2026-08-06 13:46 UTCEPSS rescoreEPSS 19% · 96th percentile
  59. 2026-08-06 04:21 UTCEG score recompute
  60. 2026-08-05 19:17 UTCEPSS rescoreEPSS 19% · 96th percentile
  61. 2026-08-04 15:10 UTCEPSS rescoreEPSS 19% · 96th percentile
  62. 2026-08-03 10:36 UTCEPSS rescoreEPSS 19% · 96th percentile
  63. 2026-08-02 21:25 UTCEG score recompute
  64. 2026-08-01 04:16 UTCEPSS rescoreEPSS 19% · 96th percentile
  65. 2026-07-30 22:50 UTCOSV refresh
  66. 2026-07-30 16:27 UTCEPSS rescoreEPSS 19% · 96th percentile
  67. 2026-07-30 01:30 UTCEPSS rescoreEPSS 19% · 96th percentile
  68. 2026-07-28 15:36 UTCEPSS rescoreEPSS 19% · 96th percentile
  69. 2026-07-26 14:54 UTCEPSS rescoreEPSS 19% · 96th percentile
  70. 2026-07-25 14:17 UTCEPSS rescoreEPSS 19% · 96th percentile
  71. 2026-07-24 14:17 UTCEPSS rescoreEPSS 19% · 96th percentile
  72. 2026-07-23 14:18 UTCEPSS rescoreEPSS 19% · 96th percentile

Public detection templates

(1 reference)

A public Nuclei detection template is referenced for this CVE. A detection template checks whether a system is affected; it is not necessarily exploit code.

  • Nucleihttp/cves/2026/CVE-2026-25512.yaml
    Published Mar 2, 2026

    Group-Office < 26.0.5 - Remote Code Execution

    Open source ↗

Frequently asked(5)

What is CVE-2026-25512?
CVE-2026-25512 is a high-severity vulnerability; its CVE record was published on February 4, 2026. Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.150, 25.0.82, and 26.0.5, there is a remote code execution (RCE) vulnerability in Group-Office. The endpoint email/message/tnefAttachmentFromTempFile directly concatenates the user-controlled…
When was the CVE record for CVE-2026-25512 published?
The CVE record for CVE-2026-25512 was published on February 4, 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 17, 2026; the record at its source may have been updated since.
Is CVE-2026-25512 actively exploited?
CVE-2026-25512 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 20% probability of exploitation in the next 30 days (97th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-25512?
CVE-2026-25512 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-25512?
A fix for CVE-2026-25512 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

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