GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

OESA-2026-1588 (CVE-2025-26597)

Vulnerability from osv_openeuler – Published: 2026-03-15 11:10 – Updated: 2026-08-06 11:10 – Source website
VLAI
Summary
libX11 security update
Details

Core X11 protocol client library.

Security Fix(es):

A buffer overflow flaw was found in X.Org and Xwayland. If XkbChangeTypesOfKey() is called with a 0 group, it will resize the key symbols table to 0 but leave the key actions unchanged. If the same function is later called with a non-zero value of groups, this will cause a buffer overflow because the key actions are of the wrong size.(CVE-2025-26597)

Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "libX11-1.7.2-10.oe2203sp4.aarch64.rpm",
          "libX11-debuginfo-1.7.2-10.oe2203sp4.aarch64.rpm",
          "libX11-debugsource-1.7.2-10.oe2203sp4.aarch64.rpm",
          "libX11-devel-1.7.2-10.oe2203sp4.aarch64.rpm"
        ],
        "noarch": [
          "libX11-help-1.7.2-10.oe2203sp4.noarch.rpm"
        ],
        "src": [
          "libX11-1.7.2-10.oe2203sp4.src.rpm"
        ],
        "x86_64": [
          "libX11-1.7.2-10.oe2203sp4.x86_64.rpm",
          "libX11-debuginfo-1.7.2-10.oe2203sp4.x86_64.rpm",
          "libX11-debugsource-1.7.2-10.oe2203sp4.x86_64.rpm",
          "libX11-devel-1.7.2-10.oe2203sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP4",
        "name": "libX11",
        "purl": "pkg:rpm/openEuler/libX11\u0026distro=openEuler-22.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.7.2-10.oe2203sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "Core X11 protocol client library.\r\n\r\nSecurity Fix(es):\n\nA buffer overflow flaw was found in X.Org and Xwayland. If XkbChangeTypesOfKey() is called with a 0 group, it will resize the key symbols table to 0 but leave the key actions unchanged. If the same function is later called with a non-zero value of groups, this will cause a buffer overflow because the key actions are of the wrong size.(CVE-2025-26597)",
  "id": "OESA-2026-1588",
  "modified": "2026-08-06T11:10:35Z",
  "published": "2026-03-15T11:10:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1588"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-26597"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "libX11 security update",
  "upstream": [
    "CVE-2025-26597"
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.