CVE-2011-1153

HIGHCVSS v2 · 7.57.5—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 7.5 — v2 rates that HIGH (v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; v2 has no CRITICAL band). Vector AV:N/AC:L/Au:N/C:P/I:P/A:P. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 6.8% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.

Sources: epss, nvd_v2
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 7%CVSS v2: 7.5Exploit: None knownExposed: 0

A fix is available — apply it.

Multiple format string vulnerabilities in phar_object.c in the phar extension in PHP 5.3.5 and earlier allow context-dependent attackers to obtain sensitive information from process memory, cause a denial of service (memory corruption), or possibly execute arbitrary code via format string specifiers in an argument to a class method, leading to an incorrect zend_throw_exception_ex call.

CVSS v2.0 (legacy)
7.5HIGHNVD never assigned a CVSS v3 rating to this CVE
EG Score
7.5(low)
EG Risk
41(Track)
EG Risk 41/100SSVC: Track

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
Severity75% × 45%
Exploitation7% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
7%
EPSS %ILE
93%
KEV
Not listed

Published

March 16, 2011

Last Modified

April 29, 2026

References (46)

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibapache2-mod-php5 (5.2.10.dfsg.1-2ubuntu6.9) @ karmic2026-05-29ubuntu

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.

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 10× in last 7d / 36× 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.

Showing the most recent 100 of 109 total refreshes for this CVE.

  1. 2026-07-26 13:43 UTCEG score recompute▲ 7.50
  2. 2026-07-23 14:14 UTCEPSS rescore
  3. 2026-07-23 01:04 UTCEG score recompute
  4. 2026-07-23 00:40 UTCEG score recompute
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  6. 2026-07-22 21:47 UTCEG score recompute
  7. 2026-07-22 14:03 UTCEPSS rescore
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  44. 2026-06-06 13:45 UTCEPSS rescore
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  59. 2026-05-29 13:41 UTCEPSS rescore
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  61. 2026-05-29 08:29 UTCEG score recompute
  62. 2026-05-29 08:29 UTCVendor advisory
  63. 2026-05-29 08:29 UTCGHSA enrichment
  64. 2026-05-28 13:42 UTCEPSS rescore
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Frequently asked(4)

What is CVE-2011-1153?
CVE-2011-1153 is a high vulnerability published on March 16, 2011. Multiple format string vulnerabilities in pharobject.c in the phar extension in PHP 5.3.5 and earlier allow context-dependent attackers to obtain sensitive information from process memory, cause a denial of service (memory corruption), or possibly execute arbitrary code via format string specifiers…
When was CVE-2011-1153 disclosed?
CVE-2011-1153 was first published in the National Vulnerability Database on March 16, 2011, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2011-1153 actively exploited?
CVE-2011-1153 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 7% probability of exploitation in the next 30 days, which ranks it in the top 6.7% of all scored CVEs.
How do I remediate CVE-2011-1153?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-1153, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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